Home / 10,572.11-15,856.90-2,781.53

Finding the Fourth Proportional to 10,572.11, 15,856.90 and 2,781.53

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Solution

The fourth proportional to 10,572.11, 15,856.90 and 2,781.53 is: 4,171.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,572.11 : 15,856.90 = 2,781.53 : x
  2. Step 2: Convert to fraction form
    10,572.11/15,856.90 = 2,781.53/x
  3. Step 3: Cross multiply
    10,572.11x = 15,856.90 × 2,781.53
  4. Step 4: Simplify right side
    10,572.11x = 44,106,443.06
  5. Step 5: Solve for x
    x = 44,106,443.06/10,572.11
  6. Step 6: Final answer
    x = 4,171.96

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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.