Home / 31,865.64-47,821.38-11,877.88

Finding the Fourth Proportional to 31,865.64, 47,821.38 and 11,877.88

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Solution

The fourth proportional to 31,865.64, 47,821.38 and 11,877.88 is: 17,825.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,865.64 : 47,821.38 = 11,877.88 : x
  2. Step 2: Convert to fraction form
    31,865.64/47,821.38 = 11,877.88/x
  3. Step 3: Cross multiply
    31,865.64x = 47,821.38 × 11,877.88
  4. Step 4: Simplify right side
    31,865.64x = 568,016,613.07
  5. Step 5: Solve for x
    x = 568,016,613.07/31,865.64
  6. Step 6: Final answer
    x = 17,825.36

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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.