Home / 13,380.73-18,446.17-9,389.47

Finding the Fourth Proportional to 13,380.73, 18,446.17 and 9,389.47

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Solution

The fourth proportional to 13,380.73, 18,446.17 and 9,389.47 is: 12,943.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.73 : 18,446.17 = 9,389.47 : x
  2. Step 2: Convert to fraction form
    13,380.73/18,446.17 = 9,389.47/x
  3. Step 3: Cross multiply
    13,380.73x = 18,446.17 × 9,389.47
  4. Step 4: Simplify right side
    13,380.73x = 173,199,759.83
  5. Step 5: Solve for x
    x = 173,199,759.83/13,380.73
  6. Step 6: Final answer
    x = 12,943.97

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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.