Home / 31,725.30-43,785.51-18,293.88

Finding the Fourth Proportional to 31,725.30, 43,785.51 and 18,293.88

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Solution

The fourth proportional to 31,725.30, 43,785.51 and 18,293.88 is: 25,248.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,725.30 : 43,785.51 = 18,293.88 : x
  2. Step 2: Convert to fraction form
    31,725.30/43,785.51 = 18,293.88/x
  3. Step 3: Cross multiply
    31,725.30x = 43,785.51 × 18,293.88
  4. Step 4: Simplify right side
    31,725.30x = 801,007,064.18
  5. Step 5: Solve for x
    x = 801,007,064.18/31,725.30
  6. Step 6: Final answer
    x = 25,248.21

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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.