Home / 28,132.66-38,787.78-18,043.30

Finding the Fourth Proportional to 28,132.66, 38,787.78 and 18,043.30

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Solution

The fourth proportional to 28,132.66, 38,787.78 and 18,043.30 is: 24,877.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.66 : 38,787.78 = 18,043.30 : x
  2. Step 2: Convert to fraction form
    28,132.66/38,787.78 = 18,043.30/x
  3. Step 3: Cross multiply
    28,132.66x = 38,787.78 × 18,043.30
  4. Step 4: Simplify right side
    28,132.66x = 699,859,453.90
  5. Step 5: Solve for x
    x = 699,859,453.90/28,132.66
  6. Step 6: Final answer
    x = 24,877.12

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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.