Home / 31,687.85-47,519.01-11,955.66

Finding the Fourth Proportional to 31,687.85, 47,519.01 and 11,955.66

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Solution

The fourth proportional to 31,687.85, 47,519.01 and 11,955.66 is: 17,928.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.85 : 47,519.01 = 11,955.66 : x
  2. Step 2: Convert to fraction form
    31,687.85/47,519.01 = 11,955.66/x
  3. Step 3: Cross multiply
    31,687.85x = 47,519.01 × 11,955.66
  4. Step 4: Simplify right side
    31,687.85x = 568,121,127.10
  5. Step 5: Solve for x
    x = 568,121,127.10/31,687.85
  6. Step 6: Final answer
    x = 17,928.68

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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.