Home / 27,865.98-38,505.87-20,299.14

Finding the Fourth Proportional to 27,865.98, 38,505.87 and 20,299.14

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Solution

The fourth proportional to 27,865.98, 38,505.87 and 20,299.14 is: 28,049.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,865.98 : 38,505.87 = 20,299.14 : x
  2. Step 2: Convert to fraction form
    27,865.98/38,505.87 = 20,299.14/x
  3. Step 3: Cross multiply
    27,865.98x = 38,505.87 × 20,299.14
  4. Step 4: Simplify right side
    27,865.98x = 781,636,045.95
  5. Step 5: Solve for x
    x = 781,636,045.95/27,865.98
  6. Step 6: Final answer
    x = 28,049.83

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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.