Home / 13,731.88-18,957.92-9,545.80

Finding the Fourth Proportional to 13,731.88, 18,957.92 and 9,545.80

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Solution

The fourth proportional to 13,731.88, 18,957.92 and 9,545.80 is: 13,178.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.88 : 18,957.92 = 9,545.80 : x
  2. Step 2: Convert to fraction form
    13,731.88/18,957.92 = 9,545.80/x
  3. Step 3: Cross multiply
    13,731.88x = 18,957.92 × 9,545.80
  4. Step 4: Simplify right side
    13,731.88x = 180,968,512.74
  5. Step 5: Solve for x
    x = 180,968,512.74/13,731.88
  6. Step 6: Final answer
    x = 13,178.71

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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.