Home / 31,319.94-43,221.70-16,979.88

Finding the Fourth Proportional to 31,319.94, 43,221.70 and 16,979.88

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Solution

The fourth proportional to 31,319.94, 43,221.70 and 16,979.88 is: 23,432.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,319.94 : 43,221.70 = 16,979.88 : x
  2. Step 2: Convert to fraction form
    31,319.94/43,221.70 = 16,979.88/x
  3. Step 3: Cross multiply
    31,319.94x = 43,221.70 × 16,979.88
  4. Step 4: Simplify right side
    31,319.94x = 733,899,279.40
  5. Step 5: Solve for x
    x = 733,899,279.40/31,319.94
  6. Step 6: Final answer
    x = 23,432.33

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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.