Home / 31,434.78-43,381.11-17,288.70

Finding the Fourth Proportional to 31,434.78, 43,381.11 and 17,288.70

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Solution

The fourth proportional to 31,434.78, 43,381.11 and 17,288.70 is: 23,859.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,434.78 : 43,381.11 = 17,288.70 : x
  2. Step 2: Convert to fraction form
    31,434.78/43,381.11 = 17,288.70/x
  3. Step 3: Cross multiply
    31,434.78x = 43,381.11 × 17,288.70
  4. Step 4: Simplify right side
    31,434.78x = 750,002,996.46
  5. Step 5: Solve for x
    x = 750,002,996.46/31,434.78
  6. Step 6: Final answer
    x = 23,859.02

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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.