Home / 20,139.13-27,770.33-12,582.70

Finding the Fourth Proportional to 20,139.13, 27,770.33 and 12,582.70

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Solution

The fourth proportional to 20,139.13, 27,770.33 and 12,582.70 is: 17,350.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.13 : 27,770.33 = 12,582.70 : x
  2. Step 2: Convert to fraction form
    20,139.13/27,770.33 = 12,582.70/x
  3. Step 3: Cross multiply
    20,139.13x = 27,770.33 × 12,582.70
  4. Step 4: Simplify right side
    20,139.13x = 349,425,731.29
  5. Step 5: Solve for x
    x = 349,425,731.29/20,139.13
  6. Step 6: Final answer
    x = 17,350.59

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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.