Home / 38,454.03-57,680.69-12,158.78

Finding the Fourth Proportional to 38,454.03, 57,680.69 and 12,158.78

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Solution

The fourth proportional to 38,454.03, 57,680.69 and 12,158.78 is: 18,238.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,454.03 : 57,680.69 = 12,158.78 : x
  2. Step 2: Convert to fraction form
    38,454.03/57,680.69 = 12,158.78/x
  3. Step 3: Cross multiply
    38,454.03x = 57,680.69 × 12,158.78
  4. Step 4: Simplify right side
    38,454.03x = 701,326,470.76
  5. Step 5: Solve for x
    x = 701,326,470.76/38,454.03
  6. Step 6: Final answer
    x = 18,238.05

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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.