Home / 38,520.10-57,780.15-12,226.90

Finding the Fourth Proportional to 38,520.10, 57,780.15 and 12,226.90

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Solution

The fourth proportional to 38,520.10, 57,780.15 and 12,226.90 is: 18,340.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,520.10 : 57,780.15 = 12,226.90 : x
  2. Step 2: Convert to fraction form
    38,520.10/57,780.15 = 12,226.90/x
  3. Step 3: Cross multiply
    38,520.10x = 57,780.15 × 12,226.90
  4. Step 4: Simplify right side
    38,520.10x = 706,472,116.04
  5. Step 5: Solve for x
    x = 706,472,116.04/38,520.10
  6. Step 6: Final answer
    x = 18,340.35

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1.5x scale

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.