Home / 31,381.08-43,318.98-22,432.20

Finding the Fourth Proportional to 31,381.08, 43,318.98 and 22,432.20

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Solution

The fourth proportional to 31,381.08, 43,318.98 and 22,432.20 is: 30,965.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,381.08 : 43,318.98 = 22,432.20 : x
  2. Step 2: Convert to fraction form
    31,381.08/43,318.98 = 22,432.20/x
  3. Step 3: Cross multiply
    31,381.08x = 43,318.98 × 22,432.20
  4. Step 4: Simplify right side
    31,381.08x = 971,740,023.16
  5. Step 5: Solve for x
    x = 971,740,023.16/31,381.08
  6. Step 6: Final answer
    x = 30,965.79

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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.