Home / 12,389.97-18,580.11-4,490.61

Finding the Fourth Proportional to 12,389.97, 18,580.11 and 4,490.61

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Solution

The fourth proportional to 12,389.97, 18,580.11 and 4,490.61 is: 6,734.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.97 : 18,580.11 = 4,490.61 : x
  2. Step 2: Convert to fraction form
    12,389.97/18,580.11 = 4,490.61/x
  3. Step 3: Cross multiply
    12,389.97x = 18,580.11 × 4,490.61
  4. Step 4: Simplify right side
    12,389.97x = 83,436,027.77
  5. Step 5: Solve for x
    x = 83,436,027.77/12,389.97
  6. Step 6: Final answer
    x = 6,734.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.