Home / 12,545.46-18,818.15-3,781.08

Finding the Fourth Proportional to 12,545.46, 18,818.15 and 3,781.08

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Solution

The fourth proportional to 12,545.46, 18,818.15 and 3,781.08 is: 5,671.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.46 : 18,818.15 = 3,781.08 : x
  2. Step 2: Convert to fraction form
    12,545.46/18,818.15 = 3,781.08/x
  3. Step 3: Cross multiply
    12,545.46x = 18,818.15 × 3,781.08
  4. Step 4: Simplify right side
    12,545.46x = 71,152,911.70
  5. Step 5: Solve for x
    x = 71,152,911.70/12,545.46
  6. Step 6: Final answer
    x = 5,671.61

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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.