Home / 31,488.56-47,231.76-11,761.28

Finding the Fourth Proportional to 31,488.56, 47,231.76 and 11,761.28

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Solution

The fourth proportional to 31,488.56, 47,231.76 and 11,761.28 is: 17,641.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,488.56 : 47,231.76 = 11,761.28 : x
  2. Step 2: Convert to fraction form
    31,488.56/47,231.76 = 11,761.28/x
  3. Step 3: Cross multiply
    31,488.56x = 47,231.76 × 11,761.28
  4. Step 4: Simplify right side
    31,488.56x = 555,505,954.25
  5. Step 5: Solve for x
    x = 555,505,954.25/31,488.56
  6. Step 6: Final answer
    x = 17,641.52

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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.