Home / 34,575.76-47,714.16-20,428.30

Finding the Fourth Proportional to 34,575.76, 47,714.16 and 20,428.30

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Solution

The fourth proportional to 34,575.76, 47,714.16 and 20,428.30 is: 28,190.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,575.76 : 47,714.16 = 20,428.30 : x
  2. Step 2: Convert to fraction form
    34,575.76/47,714.16 = 20,428.30/x
  3. Step 3: Cross multiply
    34,575.76x = 47,714.16 × 20,428.30
  4. Step 4: Simplify right side
    34,575.76x = 974,719,174.73
  5. Step 5: Solve for x
    x = 974,719,174.73/34,575.76
  6. Step 6: Final answer
    x = 28,190.82

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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.