Home / 31,872.88-43,979.40-17,725.36

Finding the Fourth Proportional to 31,872.88, 43,979.40 and 17,725.36

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Solution

The fourth proportional to 31,872.88, 43,979.40 and 17,725.36 is: 24,458.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,872.88 : 43,979.40 = 17,725.36 : x
  2. Step 2: Convert to fraction form
    31,872.88/43,979.40 = 17,725.36/x
  3. Step 3: Cross multiply
    31,872.88x = 43,979.40 × 17,725.36
  4. Step 4: Simplify right side
    31,872.88x = 779,550,697.58
  5. Step 5: Solve for x
    x = 779,550,697.58/31,872.88
  6. Step 6: Final answer
    x = 24,458.12

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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.