Home / 31,725.93-43,787.21-18,294.78

Finding the Fourth Proportional to 31,725.93, 43,787.21 and 18,294.78

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Solution

The fourth proportional to 31,725.93, 43,787.21 and 18,294.78 is: 25,249.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,725.93 : 43,787.21 = 18,294.78 : x
  2. Step 2: Convert to fraction form
    31,725.93/43,787.21 = 18,294.78/x
  3. Step 3: Cross multiply
    31,725.93x = 43,787.21 × 18,294.78
  4. Step 4: Simplify right side
    31,725.93x = 801,077,282.29
  5. Step 5: Solve for x
    x = 801,077,282.29/31,725.93
  6. Step 6: Final answer
    x = 25,249.92

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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.