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Finding the Fourth Proportional to 9,240.80, 13,861.20 and 7,053.80

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Solution

The fourth proportional to 9,240.80, 13,861.20 and 7,053.80 is: 10,580.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,240.80 : 13,861.20 = 7,053.80 : x
  2. Step 2: Convert to fraction form
    9,240.80/13,861.20 = 7,053.80/x
  3. Step 3: Cross multiply
    9,240.80x = 13,861.20 × 7,053.80
  4. Step 4: Simplify right side
    9,240.80x = 97,774,132.56
  5. Step 5: Solve for x
    x = 97,774,132.56/9,240.80
  6. Step 6: Final answer
    x = 10,580.70

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.