Home / 21,349.59-31,945.09-13,414.95

Finding the Fourth Proportional to 21,349.59, 31,945.09 and 13,414.95

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Solution

The fourth proportional to 21,349.59, 31,945.09 and 13,414.95 is: 20,072.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,349.59 : 31,945.09 = 13,414.95 : x
  2. Step 2: Convert to fraction form
    21,349.59/31,945.09 = 13,414.95/x
  3. Step 3: Cross multiply
    21,349.59x = 31,945.09 × 13,414.95
  4. Step 4: Simplify right side
    21,349.59x = 428,541,785.10
  5. Step 5: Solve for x
    x = 428,541,785.10/21,349.59
  6. Step 6: Final answer
    x = 20,072.60

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1.5x scale

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.