Home / 20,882.00-28,819.13-11,929.55

Finding the Fourth Proportional to 20,882.00, 28,819.13 and 11,929.55

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Solution

The fourth proportional to 20,882.00, 28,819.13 and 11,929.55 is: 16,463.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.00 : 28,819.13 = 11,929.55 : x
  2. Step 2: Convert to fraction form
    20,882.00/28,819.13 = 11,929.55/x
  3. Step 3: Cross multiply
    20,882.00x = 28,819.13 × 11,929.55
  4. Step 4: Simplify right side
    20,882.00x = 343,799,048.55
  5. Step 5: Solve for x
    x = 343,799,048.55/20,882.00
  6. Step 6: Final answer
    x = 16,463.89

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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.