Home / 20,668.32-28,522.60-11,236.92

Finding the Fourth Proportional to 20,668.32, 28,522.60 and 11,236.92

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Solution

The fourth proportional to 20,668.32, 28,522.60 and 11,236.92 is: 15,507.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.32 : 28,522.60 = 11,236.92 : x
  2. Step 2: Convert to fraction form
    20,668.32/28,522.60 = 11,236.92/x
  3. Step 3: Cross multiply
    20,668.32x = 28,522.60 × 11,236.92
  4. Step 4: Simplify right side
    20,668.32x = 320,506,174.39
  5. Step 5: Solve for x
    x = 320,506,174.39/20,668.32
  6. Step 6: Final answer
    x = 15,507.12

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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.