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Finding the Fourth Proportional to 10,487.10, 15,661.65 and 9,104.70

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Solution

The fourth proportional to 10,487.10, 15,661.65 and 9,104.70 is: 13,597.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,487.10 : 15,661.65 = 9,104.70 : x
  2. Step 2: Convert to fraction form
    10,487.10/15,661.65 = 9,104.70/x
  3. Step 3: Cross multiply
    10,487.10x = 15,661.65 × 9,104.70
  4. Step 4: Simplify right side
    10,487.10x = 142,594,624.76
  5. Step 5: Solve for x
    x = 142,594,624.76/10,487.10
  6. Step 6: Final answer
    x = 13,597.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.