Home / 10,257.52-14,155.38-5,781.28

Finding the Fourth Proportional to 10,257.52, 14,155.38 and 5,781.28

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Solution

The fourth proportional to 10,257.52, 14,155.38 and 5,781.28 is: 7,978.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,257.52 : 14,155.38 = 5,781.28 : x
  2. Step 2: Convert to fraction form
    10,257.52/14,155.38 = 5,781.28/x
  3. Step 3: Cross multiply
    10,257.52x = 14,155.38 × 5,781.28
  4. Step 4: Simplify right side
    10,257.52x = 81,836,215.29
  5. Step 5: Solve for x
    x = 81,836,215.29/10,257.52
  6. Step 6: Final answer
    x = 7,978.17

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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.