Home / 31,567.17-43,561.20-18,128.97

Finding the Fourth Proportional to 31,567.17, 43,561.20 and 18,128.97

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Solution

The fourth proportional to 31,567.17, 43,561.20 and 18,128.97 is: 25,017.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,567.17 : 43,561.20 = 18,128.97 : x
  2. Step 2: Convert to fraction form
    31,567.17/43,561.20 = 18,128.97/x
  3. Step 3: Cross multiply
    31,567.17x = 43,561.20 × 18,128.97
  4. Step 4: Simplify right side
    31,567.17x = 789,719,687.96
  5. Step 5: Solve for x
    x = 789,719,687.96/31,567.17
  6. Step 6: Final answer
    x = 25,017.12

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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.