Home / 31,144.32-42,979.36-16,997.12

Finding the Fourth Proportional to 31,144.32, 42,979.36 and 16,997.12

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Solution

The fourth proportional to 31,144.32, 42,979.36 and 16,997.12 is: 23,456.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,144.32 : 42,979.36 = 16,997.12 : x
  2. Step 2: Convert to fraction form
    31,144.32/42,979.36 = 16,997.12/x
  3. Step 3: Cross multiply
    31,144.32x = 42,979.36 × 16,997.12
  4. Step 4: Simplify right side
    31,144.32x = 730,525,339.44
  5. Step 5: Solve for x
    x = 730,525,339.44/31,144.32
  6. Step 6: Final answer
    x = 23,456.13

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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.