Home / 31,473.11-43,427.79-18,726.68

Finding the Fourth Proportional to 31,473.11, 43,427.79 and 18,726.68

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Solution

The fourth proportional to 31,473.11, 43,427.79 and 18,726.68 is: 25,839.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,473.11 : 43,427.79 = 18,726.68 : x
  2. Step 2: Convert to fraction form
    31,473.11/43,427.79 = 18,726.68/x
  3. Step 3: Cross multiply
    31,473.11x = 43,427.79 × 18,726.68
  4. Step 4: Simplify right side
    31,473.11x = 813,258,109.30
  5. Step 5: Solve for x
    x = 813,258,109.30/31,473.11
  6. Step 6: Final answer
    x = 25,839.78

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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.