Home / 38,447.20-57,670.80-20,951.20

Finding the Fourth Proportional to 38,447.20, 57,670.80 and 20,951.20

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Solution

The fourth proportional to 38,447.20, 57,670.80 and 20,951.20 is: 31,426.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,447.20 : 57,670.80 = 20,951.20 : x
  2. Step 2: Convert to fraction form
    38,447.20/57,670.80 = 20,951.20/x
  3. Step 3: Cross multiply
    38,447.20x = 57,670.80 × 20,951.20
  4. Step 4: Simplify right side
    38,447.20x = 1,208,272,464.96
  5. Step 5: Solve for x
    x = 1,208,272,464.96/38,447.20
  6. Step 6: Final answer
    x = 31,426.80

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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.