Home / 10,572.05-15,856.80-2,781.47

Finding the Fourth Proportional to 10,572.05, 15,856.80 and 2,781.47

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Solution

The fourth proportional to 10,572.05, 15,856.80 and 2,781.47 is: 4,171.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,572.05 : 15,856.80 = 2,781.47 : x
  2. Step 2: Convert to fraction form
    10,572.05/15,856.80 = 2,781.47/x
  3. Step 3: Cross multiply
    10,572.05x = 15,856.80 × 2,781.47
  4. Step 4: Simplify right side
    10,572.05x = 44,105,134.21
  5. Step 5: Solve for x
    x = 44,105,134.21/10,572.05
  6. Step 6: Final answer
    x = 4,171.86

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.