Home / 10,288.10-15,432.15-9,931.70

Finding the Fourth Proportional to 10,288.10, 15,432.15 and 9,931.70

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Solution

The fourth proportional to 10,288.10, 15,432.15 and 9,931.70 is: 14,897.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,288.10 : 15,432.15 = 9,931.70 : x
  2. Step 2: Convert to fraction form
    10,288.10/15,432.15 = 9,931.70/x
  3. Step 3: Cross multiply
    10,288.10x = 15,432.15 × 9,931.70
  4. Step 4: Simplify right side
    10,288.10x = 153,267,484.16
  5. Step 5: Solve for x
    x = 153,267,484.16/10,288.10
  6. Step 6: Final answer
    x = 14,897.55

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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.