Home / 20,733.57-28,590.17-13,647.69

Finding the Fourth Proportional to 20,733.57, 28,590.17 and 13,647.69

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Solution

The fourth proportional to 20,733.57, 28,590.17 and 13,647.69 is: 18,819.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733.57 : 28,590.17 = 13,647.69 : x
  2. Step 2: Convert to fraction form
    20,733.57/28,590.17 = 13,647.69/x
  3. Step 3: Cross multiply
    20,733.57x = 28,590.17 × 13,647.69
  4. Step 4: Simplify right side
    20,733.57x = 390,189,708.97
  5. Step 5: Solve for x
    x = 390,189,708.97/20,733.57
  6. Step 6: Final answer
    x = 18,819.22

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Double scale
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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.