Home / 31,808.08-43,897.12-18,381.76

Finding the Fourth Proportional to 31,808.08, 43,897.12 and 18,381.76

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Solution

The fourth proportional to 31,808.08, 43,897.12 and 18,381.76 is: 25,367.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,808.08 : 43,897.12 = 18,381.76 : x
  2. Step 2: Convert to fraction form
    31,808.08/43,897.12 = 18,381.76/x
  3. Step 3: Cross multiply
    31,808.08x = 43,897.12 × 18,381.76
  4. Step 4: Simplify right side
    31,808.08x = 806,906,324.53
  5. Step 5: Solve for x
    x = 806,906,324.53/31,808.08
  6. Step 6: Final answer
    x = 25,367.97

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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.