Home / 20,763.29-28,654.28-11,691.77

Finding the Fourth Proportional to 20,763.29, 28,654.28 and 11,691.77

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Solution

The fourth proportional to 20,763.29, 28,654.28 and 11,691.77 is: 16,135.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.29 : 28,654.28 = 11,691.77 : x
  2. Step 2: Convert to fraction form
    20,763.29/28,654.28 = 11,691.77/x
  3. Step 3: Cross multiply
    20,763.29x = 28,654.28 × 11,691.77
  4. Step 4: Simplify right side
    20,763.29x = 335,019,251.28
  5. Step 5: Solve for x
    x = 335,019,251.28/20,763.29
  6. Step 6: Final answer
    x = 16,135.17

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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.