Home / 47,618.20-71,428.38-12,561.40

Finding the Fourth Proportional to 47,618.20, 71,428.38 and 12,561.40

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Solution

The fourth proportional to 47,618.20, 71,428.38 and 12,561.40 is: 18,842.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,618.20 : 71,428.38 = 12,561.40 : x
  2. Step 2: Convert to fraction form
    47,618.20/71,428.38 = 12,561.40/x
  3. Step 3: Cross multiply
    47,618.20x = 71,428.38 × 12,561.40
  4. Step 4: Simplify right side
    47,618.20x = 897,240,452.53
  5. Step 5: Solve for x
    x = 897,240,452.53/47,618.20
  6. Step 6: Final answer
    x = 18,842.38

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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.