Home / 20,814.92-28,724.30-11,862.96

Finding the Fourth Proportional to 20,814.92, 28,724.30 and 11,862.96

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Solution

The fourth proportional to 20,814.92, 28,724.30 and 11,862.96 is: 16,370.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,814.92 : 28,724.30 = 11,862.96 : x
  2. Step 2: Convert to fraction form
    20,814.92/28,724.30 = 11,862.96/x
  3. Step 3: Cross multiply
    20,814.92x = 28,724.30 × 11,862.96
  4. Step 4: Simplify right side
    20,814.92x = 340,755,221.93
  5. Step 5: Solve for x
    x = 340,755,221.93/20,814.92
  6. Step 6: Final answer
    x = 16,370.72

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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.