Home / 31,864.64-47,731.20-18,676.96

Finding the Fourth Proportional to 31,864.64, 47,731.20 and 18,676.96

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Solution

The fourth proportional to 31,864.64, 47,731.20 and 18,676.96 is: 27,976.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,864.64 : 47,731.20 = 18,676.96 : x
  2. Step 2: Convert to fraction form
    31,864.64/47,731.20 = 18,676.96/x
  3. Step 3: Cross multiply
    31,864.64x = 47,731.20 × 18,676.96
  4. Step 4: Simplify right side
    31,864.64x = 891,473,713.15
  5. Step 5: Solve for x
    x = 891,473,713.15/31,864.64
  6. Step 6: Final answer
    x = 27,976.90

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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.