Home / 20,951.96-31,439.25-16,281.36

Finding the Fourth Proportional to 20,951.96, 31,439.25 and 16,281.36

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Solution

The fourth proportional to 20,951.96, 31,439.25 and 16,281.36 is: 24,430.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,951.96 : 31,439.25 = 16,281.36 : x
  2. Step 2: Convert to fraction form
    20,951.96/31,439.25 = 16,281.36/x
  3. Step 3: Cross multiply
    20,951.96x = 31,439.25 × 16,281.36
  4. Step 4: Simplify right side
    20,951.96x = 511,873,747.38
  5. Step 5: Solve for x
    x = 511,873,747.38/20,951.96
  6. Step 6: Final answer
    x = 24,430.83

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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.