Home / 20,211.91-27,892.50-11,715.70

Finding the Fourth Proportional to 20,211.91, 27,892.50 and 11,715.70

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Solution

The fourth proportional to 20,211.91, 27,892.50 and 11,715.70 is: 16,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.91 : 27,892.50 = 11,715.70 : x
  2. Step 2: Convert to fraction form
    20,211.91/27,892.50 = 11,715.70/x
  3. Step 3: Cross multiply
    20,211.91x = 27,892.50 × 11,715.70
  4. Step 4: Simplify right side
    20,211.91x = 326,780,162.25
  5. Step 5: Solve for x
    x = 326,780,162.25/20,211.91
  6. Step 6: Final answer
    x = 16,167.70

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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.