Home / 31,639.33-43,649.14-20,306.42

Finding the Fourth Proportional to 31,639.33, 43,649.14 and 20,306.42

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Solution

The fourth proportional to 31,639.33, 43,649.14 and 20,306.42 is: 28,014.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,639.33 : 43,649.14 = 20,306.42 : x
  2. Step 2: Convert to fraction form
    31,639.33/43,649.14 = 20,306.42/x
  3. Step 3: Cross multiply
    31,639.33x = 43,649.14 × 20,306.42
  4. Step 4: Simplify right side
    31,639.33x = 886,357,769.48
  5. Step 5: Solve for x
    x = 886,357,769.48/31,639.33
  6. Step 6: Final answer
    x = 28,014.43

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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.