Home / 31,876.42-47,816.20-12,151.30

Finding the Fourth Proportional to 31,876.42, 47,816.20 and 12,151.30

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Solution

The fourth proportional to 31,876.42, 47,816.20 and 12,151.30 is: 18,227.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,876.42 : 47,816.20 = 12,151.30 : x
  2. Step 2: Convert to fraction form
    31,876.42/47,816.20 = 12,151.30/x
  3. Step 3: Cross multiply
    31,876.42x = 47,816.20 × 12,151.30
  4. Step 4: Simplify right side
    31,876.42x = 581,028,991.06
  5. Step 5: Solve for x
    x = 581,028,991.06/31,876.42
  6. Step 6: Final answer
    x = 18,227.55

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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.