Home / 20,616.98-28,454.11-11,545.79

Finding the Fourth Proportional to 20,616.98, 28,454.11 and 11,545.79

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Solution

The fourth proportional to 20,616.98, 28,454.11 and 11,545.79 is: 15,934.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.98 : 28,454.11 = 11,545.79 : x
  2. Step 2: Convert to fraction form
    20,616.98/28,454.11 = 11,545.79/x
  3. Step 3: Cross multiply
    20,616.98x = 28,454.11 × 11,545.79
  4. Step 4: Simplify right side
    20,616.98x = 328,525,178.70
  5. Step 5: Solve for x
    x = 328,525,178.70/20,616.98
  6. Step 6: Final answer
    x = 15,934.69

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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.