Home / 31,279.64-43,165.92-16,939.58

Finding the Fourth Proportional to 31,279.64, 43,165.92 and 16,939.58

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Solution

The fourth proportional to 31,279.64, 43,165.92 and 16,939.58 is: 23,376.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,279.64 : 43,165.92 = 16,939.58 : x
  2. Step 2: Convert to fraction form
    31,279.64/43,165.92 = 16,939.58/x
  3. Step 3: Cross multiply
    31,279.64x = 43,165.92 × 16,939.58
  4. Step 4: Simplify right side
    31,279.64x = 731,212,555.11
  5. Step 5: Solve for x
    x = 731,212,555.11/31,279.64
  6. Step 6: Final answer
    x = 23,376.63

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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.