Home / 31,619.75-47,432.07-11,897.87

Finding the Fourth Proportional to 31,619.75, 47,432.07 and 11,897.87

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Solution

The fourth proportional to 31,619.75, 47,432.07 and 11,897.87 is: 17,847.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,619.75 : 47,432.07 = 11,897.87 : x
  2. Step 2: Convert to fraction form
    31,619.75/47,432.07 = 11,897.87/x
  3. Step 3: Cross multiply
    31,619.75x = 47,432.07 × 11,897.87
  4. Step 4: Simplify right side
    31,619.75x = 564,340,365.53
  5. Step 5: Solve for x
    x = 564,340,365.53/31,619.75
  6. Step 6: Final answer
    x = 17,847.72

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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.