Home / 20,545.11-30,801.52-8,689.18

Finding the Fourth Proportional to 20,545.11, 30,801.52 and 8,689.18

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Solution

The fourth proportional to 20,545.11, 30,801.52 and 8,689.18 is: 13,026.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.11 : 30,801.52 = 8,689.18 : x
  2. Step 2: Convert to fraction form
    20,545.11/30,801.52 = 8,689.18/x
  3. Step 3: Cross multiply
    20,545.11x = 30,801.52 × 8,689.18
  4. Step 4: Simplify right side
    20,545.11x = 267,639,951.55
  5. Step 5: Solve for x
    x = 267,639,951.55/20,545.11
  6. Step 6: Final answer
    x = 13,026.94

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1.5x scale

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.