Home / 31,471.56-43,434.90-18,897.12

Finding the Fourth Proportional to 31,471.56, 43,434.90 and 18,897.12

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Solution

The fourth proportional to 31,471.56, 43,434.90 and 18,897.12 is: 26,080.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,471.56 : 43,434.90 = 18,897.12 : x
  2. Step 2: Convert to fraction form
    31,471.56/43,434.90 = 18,897.12/x
  3. Step 3: Cross multiply
    31,471.56x = 43,434.90 × 18,897.12
  4. Step 4: Simplify right side
    31,471.56x = 820,794,517.49
  5. Step 5: Solve for x
    x = 820,794,517.49/31,471.56
  6. Step 6: Final answer
    x = 26,080.52

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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.