Home / 34,575.80-47,715.21-20,428.61

Finding the Fourth Proportional to 34,575.80, 47,715.21 and 20,428.61

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Solution

The fourth proportional to 34,575.80, 47,715.21 and 20,428.61 is: 28,191.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,575.80 : 47,715.21 = 20,428.61 : x
  2. Step 2: Convert to fraction form
    34,575.80/47,715.21 = 20,428.61/x
  3. Step 3: Cross multiply
    34,575.80x = 47,715.21 × 20,428.61
  4. Step 4: Simplify right side
    34,575.80x = 974,755,177.58
  5. Step 5: Solve for x
    x = 974,755,177.58/34,575.80
  6. Step 6: Final answer
    x = 28,191.84

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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.