Home / 15,439.73-21,306.60-8,725.29

Finding the Fourth Proportional to 15,439.73, 21,306.60 and 8,725.29

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Solution

The fourth proportional to 15,439.73, 21,306.60 and 8,725.29 is: 12,040.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.73 : 21,306.60 = 8,725.29 : x
  2. Step 2: Convert to fraction form
    15,439.73/21,306.60 = 8,725.29/x
  3. Step 3: Cross multiply
    15,439.73x = 21,306.60 × 8,725.29
  4. Step 4: Simplify right side
    15,439.73x = 185,906,263.91
  5. Step 5: Solve for x
    x = 185,906,263.91/15,439.73
  6. Step 6: Final answer
    x = 12,040.78

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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.