Home / 31,278.04-43,156.76-18,524.86

Finding the Fourth Proportional to 31,278.04, 43,156.76 and 18,524.86

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Solution

The fourth proportional to 31,278.04, 43,156.76 and 18,524.86 is: 25,560.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,278.04 : 43,156.76 = 18,524.86 : x
  2. Step 2: Convert to fraction form
    31,278.04/43,156.76 = 18,524.86/x
  3. Step 3: Cross multiply
    31,278.04x = 43,156.76 × 18,524.86
  4. Step 4: Simplify right side
    31,278.04x = 799,472,937.05
  5. Step 5: Solve for x
    x = 799,472,937.05/31,278.04
  6. Step 6: Final answer
    x = 25,560.20

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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.