Home / 28,553.76-42,806-13,742.28

Finding the Fourth Proportional to 28,553.76, 42,806 and 13,742.28

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Solution

The fourth proportional to 28,553.76, 42,806 and 13,742.28 is: 20,601.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,553.76 : 42,806 = 13,742.28 : x
  2. Step 2: Convert to fraction form
    28,553.76/42,806 = 13,742.28/x
  3. Step 3: Cross multiply
    28,553.76x = 42,806 × 13,742.28
  4. Step 4: Simplify right side
    28,553.76x = 588,252,037.68
  5. Step 5: Solve for x
    x = 588,252,037.68/28,553.76
  6. Step 6: Final answer
    x = 20,601.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.