Home / 31,665.42-43,691.04-18,234.20

Finding the Fourth Proportional to 31,665.42, 43,691.04 and 18,234.20

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Solution

The fourth proportional to 31,665.42, 43,691.04 and 18,234.20 is: 25,159.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,665.42 : 43,691.04 = 18,234.20 : x
  2. Step 2: Convert to fraction form
    31,665.42/43,691.04 = 18,234.20/x
  3. Step 3: Cross multiply
    31,665.42x = 43,691.04 × 18,234.20
  4. Step 4: Simplify right side
    31,665.42x = 796,670,943.11
  5. Step 5: Solve for x
    x = 796,670,943.11/31,665.42
  6. Step 6: Final answer
    x = 25,159.02

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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.