Home / 31,976.40-47,971.52-12,254.97

Finding the Fourth Proportional to 31,976.40, 47,971.52 and 12,254.97

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Solution

The fourth proportional to 31,976.40, 47,971.52 and 12,254.97 is: 18,385.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,976.40 : 47,971.52 = 12,254.97 : x
  2. Step 2: Convert to fraction form
    31,976.40/47,971.52 = 12,254.97/x
  3. Step 3: Cross multiply
    31,976.40x = 47,971.52 × 12,254.97
  4. Step 4: Simplify right side
    31,976.40x = 587,889,477.18
  5. Step 5: Solve for x
    x = 587,889,477.18/31,976.40
  6. Step 6: Final answer
    x = 18,385.11

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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.