Home / 20,717.27-28,590.39-11,764.20

Finding the Fourth Proportional to 20,717.27, 28,590.39 and 11,764.20

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Solution

The fourth proportional to 20,717.27, 28,590.39 and 11,764.20 is: 16,234.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.27 : 28,590.39 = 11,764.20 : x
  2. Step 2: Convert to fraction form
    20,717.27/28,590.39 = 11,764.20/x
  3. Step 3: Cross multiply
    20,717.27x = 28,590.39 × 11,764.20
  4. Step 4: Simplify right side
    20,717.27x = 336,343,066.04
  5. Step 5: Solve for x
    x = 336,343,066.04/20,717.27
  6. Step 6: Final answer
    x = 16,234.92

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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.