Home / 13,131.42-18,124.47-7,545.66

Finding the Fourth Proportional to 13,131.42, 18,124.47 and 7,545.66

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Solution

The fourth proportional to 13,131.42, 18,124.47 and 7,545.66 is: 10,414.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.42 : 18,124.47 = 7,545.66 : x
  2. Step 2: Convert to fraction form
    13,131.42/18,124.47 = 7,545.66/x
  3. Step 3: Cross multiply
    13,131.42x = 18,124.47 × 7,545.66
  4. Step 4: Simplify right side
    13,131.42x = 136,761,088.30
  5. Step 5: Solve for x
    x = 136,761,088.30/13,131.42
  6. Step 6: Final answer
    x = 10,414.80

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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.