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Finding the Fourth Proportional to 9,520.61, 13,163.52 and 8,338.29

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Solution

The fourth proportional to 9,520.61, 13,163.52 and 8,338.29 is: 11,528.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,520.61 : 13,163.52 = 8,338.29 : x
  2. Step 2: Convert to fraction form
    9,520.61/13,163.52 = 8,338.29/x
  3. Step 3: Cross multiply
    9,520.61x = 13,163.52 × 8,338.29
  4. Step 4: Simplify right side
    9,520.61x = 109,761,220.44
  5. Step 5: Solve for x
    x = 109,761,220.44/9,520.61
  6. Step 6: Final answer
    x = 11,528.80

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Find fourth proportional to 4,760.30, 6,581.76 and 4,169.14
Half scale
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Double scale
Find fourth proportional to 9,521.61, 13,164.90 and 8,339.29
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.