Home / 10,257.38-14,155.97-5,781.56

Finding the Fourth Proportional to 10,257.38, 14,155.97 and 5,781.56

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Solution

The fourth proportional to 10,257.38, 14,155.97 and 5,781.56 is: 7,978.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,257.38 : 14,155.97 = 5,781.56 : x
  2. Step 2: Convert to fraction form
    10,257.38/14,155.97 = 5,781.56/x
  3. Step 3: Cross multiply
    10,257.38x = 14,155.97 × 5,781.56
  4. Step 4: Simplify right side
    10,257.38x = 81,843,490.23
  5. Step 5: Solve for x
    x = 81,843,490.23/10,257.38
  6. Step 6: Final answer
    x = 7,978.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.