Home / 31,821.60-43,911.22-18,393.72

Finding the Fourth Proportional to 31,821.60, 43,911.22 and 18,393.72

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Solution

The fourth proportional to 31,821.60, 43,911.22 and 18,393.72 is: 25,381.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,821.60 : 43,911.22 = 18,393.72 : x
  2. Step 2: Convert to fraction form
    31,821.60/43,911.22 = 18,393.72/x
  3. Step 3: Cross multiply
    31,821.60x = 43,911.22 × 18,393.72
  4. Step 4: Simplify right side
    31,821.60x = 807,690,685.54
  5. Step 5: Solve for x
    x = 807,690,685.54/31,821.60
  6. Step 6: Final answer
    x = 25,381.84

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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.