Home / 31,726.72-47,538.60-18,546.40

Finding the Fourth Proportional to 31,726.72, 47,538.60 and 18,546.40

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Solution

The fourth proportional to 31,726.72, 47,538.60 and 18,546.40 is: 27,789.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,726.72 : 47,538.60 = 18,546.40 : x
  2. Step 2: Convert to fraction form
    31,726.72/47,538.60 = 18,546.40/x
  3. Step 3: Cross multiply
    31,726.72x = 47,538.60 × 18,546.40
  4. Step 4: Simplify right side
    31,726.72x = 881,669,891.04
  5. Step 5: Solve for x
    x = 881,669,891.04/31,726.72
  6. Step 6: Final answer
    x = 27,789.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.