Home / 13,440.13-18,545.97-7,470.85

Finding the Fourth Proportional to 13,440.13, 18,545.97 and 7,470.85

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Solution

The fourth proportional to 13,440.13, 18,545.97 and 7,470.85 is: 10,308.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.13 : 18,545.97 = 7,470.85 : x
  2. Step 2: Convert to fraction form
    13,440.13/18,545.97 = 7,470.85/x
  3. Step 3: Cross multiply
    13,440.13x = 18,545.97 × 7,470.85
  4. Step 4: Simplify right side
    13,440.13x = 138,554,159.97
  5. Step 5: Solve for x
    x = 138,554,159.97/13,440.13
  6. Step 6: Final answer
    x = 10,308.99

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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.