Home / 16,787.97-25,279.53-12,139.68

Finding the Fourth Proportional to 16,787.97, 25,279.53 and 12,139.68

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Solution

The fourth proportional to 16,787.97, 25,279.53 and 12,139.68 is: 18,280.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,787.97 : 25,279.53 = 12,139.68 : x
  2. Step 2: Convert to fraction form
    16,787.97/25,279.53 = 12,139.68/x
  3. Step 3: Cross multiply
    16,787.97x = 25,279.53 × 12,139.68
  4. Step 4: Simplify right side
    16,787.97x = 306,885,404.75
  5. Step 5: Solve for x
    x = 306,885,404.75/16,787.97
  6. Step 6: Final answer
    x = 18,280.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.