Home / 20,898.59-31,331.45-14,304.78

Finding the Fourth Proportional to 20,898.59, 31,331.45 and 14,304.78

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Solution

The fourth proportional to 20,898.59, 31,331.45 and 14,304.78 is: 21,445.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.59 : 31,331.45 = 14,304.78 : x
  2. Step 2: Convert to fraction form
    20,898.59/31,331.45 = 14,304.78/x
  3. Step 3: Cross multiply
    20,898.59x = 31,331.45 × 14,304.78
  4. Step 4: Simplify right side
    20,898.59x = 448,189,535.09
  5. Step 5: Solve for x
    x = 448,189,535.09/20,898.59
  6. Step 6: Final answer
    x = 21,445.93

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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.