Home / 12,545.28-18,814.77-5,151.78

Finding the Fourth Proportional to 12,545.28, 18,814.77 and 5,151.78

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Solution

The fourth proportional to 12,545.28, 18,814.77 and 5,151.78 is: 7,726.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.28 : 18,814.77 = 5,151.78 : x
  2. Step 2: Convert to fraction form
    12,545.28/18,814.77 = 5,151.78/x
  3. Step 3: Cross multiply
    12,545.28x = 18,814.77 × 5,151.78
  4. Step 4: Simplify right side
    12,545.28x = 96,929,555.79
  5. Step 5: Solve for x
    x = 96,929,555.79/12,545.28
  6. Step 6: Final answer
    x = 7,726.38

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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.