Home / 31,366.13-47,065.32-20,843.42

Finding the Fourth Proportional to 31,366.13, 47,065.32 and 20,843.42

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Solution

The fourth proportional to 31,366.13, 47,065.32 and 20,843.42 is: 31,275.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,366.13 : 47,065.32 = 20,843.42 : x
  2. Step 2: Convert to fraction form
    31,366.13/47,065.32 = 20,843.42/x
  3. Step 3: Cross multiply
    31,366.13x = 47,065.32 × 20,843.42
  4. Step 4: Simplify right side
    31,366.13x = 981,001,996.87
  5. Step 5: Solve for x
    x = 981,001,996.87/31,366.13
  6. Step 6: Final answer
    x = 31,275.84

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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.