Home / 21,332.97-29,439.45-12,385.71

Finding the Fourth Proportional to 21,332.97, 29,439.45 and 12,385.71

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Solution

The fourth proportional to 21,332.97, 29,439.45 and 12,385.71 is: 17,092.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.97 : 29,439.45 = 12,385.71 : x
  2. Step 2: Convert to fraction form
    21,332.97/29,439.45 = 12,385.71/x
  3. Step 3: Cross multiply
    21,332.97x = 29,439.45 × 12,385.71
  4. Step 4: Simplify right side
    21,332.97x = 364,628,490.26
  5. Step 5: Solve for x
    x = 364,628,490.26/21,332.97
  6. Step 6: Final answer
    x = 17,092.25

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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.