Home / 31,236.92-43,102.70-18,659

Finding the Fourth Proportional to 31,236.92, 43,102.70 and 18,659

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Solution

The fourth proportional to 31,236.92, 43,102.70 and 18,659 is: 25,746.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,236.92 : 43,102.70 = 18,659 : x
  2. Step 2: Convert to fraction form
    31,236.92/43,102.70 = 18,659/x
  3. Step 3: Cross multiply
    31,236.92x = 43,102.70 × 18,659
  4. Step 4: Simplify right side
    31,236.92x = 804,253,279.30
  5. Step 5: Solve for x
    x = 804,253,279.30/31,236.92
  6. Step 6: Final answer
    x = 25,746.88

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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.