Home / 13,220.29-18,244.11-7,251.91

Finding the Fourth Proportional to 13,220.29, 18,244.11 and 7,251.91

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Solution

The fourth proportional to 13,220.29, 18,244.11 and 7,251.91 is: 10,007.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.29 : 18,244.11 = 7,251.91 : x
  2. Step 2: Convert to fraction form
    13,220.29/18,244.11 = 7,251.91/x
  3. Step 3: Cross multiply
    13,220.29x = 18,244.11 × 7,251.91
  4. Step 4: Simplify right side
    13,220.29x = 132,304,643.75
  5. Step 5: Solve for x
    x = 132,304,643.75/13,220.29
  6. Step 6: Final answer
    x = 10,007.70

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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.