Home / 31,278.11-43,171.38-19,334.25

Finding the Fourth Proportional to 31,278.11, 43,171.38 and 19,334.25

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Solution

The fourth proportional to 31,278.11, 43,171.38 and 19,334.25 is: 26,685.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,278.11 : 43,171.38 = 19,334.25 : x
  2. Step 2: Convert to fraction form
    31,278.11/43,171.38 = 19,334.25/x
  3. Step 3: Cross multiply
    31,278.11x = 43,171.38 × 19,334.25
  4. Step 4: Simplify right side
    31,278.11x = 834,686,253.77
  5. Step 5: Solve for x
    x = 834,686,253.77/31,278.11
  6. Step 6: Final answer
    x = 26,685.96

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Double scale
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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.