Home / 20,717.68-28,590.48-11,286.16

Finding the Fourth Proportional to 20,717.68, 28,590.48 and 11,286.16

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Solution

The fourth proportional to 20,717.68, 28,590.48 and 11,286.16 is: 15,574.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.68 : 28,590.48 = 11,286.16 : x
  2. Step 2: Convert to fraction form
    20,717.68/28,590.48 = 11,286.16/x
  3. Step 3: Cross multiply
    20,717.68x = 28,590.48 × 11,286.16
  4. Step 4: Simplify right side
    20,717.68x = 322,676,731.76
  5. Step 5: Solve for x
    x = 322,676,731.76/20,717.68
  6. Step 6: Final answer
    x = 15,574.95

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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.