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Finding the Fourth Proportional to 31,672.43, 43,701.01 and 18,923.70

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Solution

The fourth proportional to 31,672.43, 43,701.01 and 18,923.70 is: 26,110.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,672.43 : 43,701.01 = 18,923.70 : x
  2. Step 2: Convert to fraction form
    31,672.43/43,701.01 = 18,923.70/x
  3. Step 3: Cross multiply
    31,672.43x = 43,701.01 × 18,923.70
  4. Step 4: Simplify right side
    31,672.43x = 826,984,662.71
  5. Step 5: Solve for x
    x = 826,984,662.71/31,672.43
  6. Step 6: Final answer
    x = 26,110.55

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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.