Home / 20,211.68-27,892.16-11,715.44

Finding the Fourth Proportional to 20,211.68, 27,892.16 and 11,715.44

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Solution

The fourth proportional to 20,211.68, 27,892.16 and 11,715.44 is: 16,167.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.68 : 27,892.16 = 11,715.44 : x
  2. Step 2: Convert to fraction form
    20,211.68/27,892.16 = 11,715.44/x
  3. Step 3: Cross multiply
    20,211.68x = 27,892.16 × 11,715.44
  4. Step 4: Simplify right side
    20,211.68x = 326,768,728.91
  5. Step 5: Solve for x
    x = 326,768,728.91/20,211.68
  6. Step 6: Final answer
    x = 16,167.33

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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.