Home / 31,976.64-47,966.87-13,258.06

Finding the Fourth Proportional to 31,976.64, 47,966.87 and 13,258.06

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Solution

The fourth proportional to 31,976.64, 47,966.87 and 13,258.06 is: 19,887.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,976.64 : 47,966.87 = 13,258.06 : x
  2. Step 2: Convert to fraction form
    31,976.64/47,966.87 = 13,258.06/x
  3. Step 3: Cross multiply
    31,976.64x = 47,966.87 × 13,258.06
  4. Step 4: Simplify right side
    31,976.64x = 635,947,553.70
  5. Step 5: Solve for x
    x = 635,947,553.70/31,976.64
  6. Step 6: Final answer
    x = 19,887.88

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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.