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Finding the Fourth Proportional to 9,069.81, 12,510.18 and 7,391.28

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Solution

The fourth proportional to 9,069.81, 12,510.18 and 7,391.28 is: 10,194.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,069.81 : 12,510.18 = 7,391.28 : x
  2. Step 2: Convert to fraction form
    9,069.81/12,510.18 = 7,391.28/x
  3. Step 3: Cross multiply
    9,069.81x = 12,510.18 × 7,391.28
  4. Step 4: Simplify right side
    9,069.81x = 92,466,290.14
  5. Step 5: Solve for x
    x = 92,466,290.14/9,069.81
  6. Step 6: Final answer
    x = 10,194.96

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Half scale
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Double scale
Find fourth proportional to 9,070.81, 12,511.56 and 7,392.28
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.