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Finding the Fourth Proportional to 10,357.10, 15,535.65 and 9,287.90

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Solution

The fourth proportional to 10,357.10, 15,535.65 and 9,287.90 is: 13,931.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,357.10 : 15,535.65 = 9,287.90 : x
  2. Step 2: Convert to fraction form
    10,357.10/15,535.65 = 9,287.90/x
  3. Step 3: Cross multiply
    10,357.10x = 15,535.65 × 9,287.90
  4. Step 4: Simplify right side
    10,357.10x = 144,293,563.64
  5. Step 5: Solve for x
    x = 144,293,563.64/10,357.10
  6. Step 6: Final answer
    x = 13,931.85

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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.