Home / 47,689.38-71,538.12-12,628.53

Finding the Fourth Proportional to 47,689.38, 71,538.12 and 12,628.53

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Solution

The fourth proportional to 47,689.38, 71,538.12 and 12,628.53 is: 18,943.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,689.38 : 71,538.12 = 12,628.53 : x
  2. Step 2: Convert to fraction form
    47,689.38/71,538.12 = 12,628.53/x
  3. Step 3: Cross multiply
    47,689.38x = 71,538.12 × 12,628.53
  4. Step 4: Simplify right side
    47,689.38x = 903,421,294.56
  5. Step 5: Solve for x
    x = 903,421,294.56/47,689.38
  6. Step 6: Final answer
    x = 18,943.87

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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.