Home / 31,463.20-43,419.12-18,887.92

Finding the Fourth Proportional to 31,463.20, 43,419.12 and 18,887.92

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Solution

The fourth proportional to 31,463.20, 43,419.12 and 18,887.92 is: 26,065.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,463.20 : 43,419.12 = 18,887.92 : x
  2. Step 2: Convert to fraction form
    31,463.20/43,419.12 = 18,887.92/x
  3. Step 3: Cross multiply
    31,463.20x = 43,419.12 × 18,887.92
  4. Step 4: Simplify right side
    31,463.20x = 820,096,865.03
  5. Step 5: Solve for x
    x = 820,096,865.03/31,463.20
  6. Step 6: Final answer
    x = 26,065.27

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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.