Home / 31,408.73-47,115.40-11,687.28

Finding the Fourth Proportional to 31,408.73, 47,115.40 and 11,687.28

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Solution

The fourth proportional to 31,408.73, 47,115.40 and 11,687.28 is: 17,531.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,408.73 : 47,115.40 = 11,687.28 : x
  2. Step 2: Convert to fraction form
    31,408.73/47,115.40 = 11,687.28/x
  3. Step 3: Cross multiply
    31,408.73x = 47,115.40 × 11,687.28
  4. Step 4: Simplify right side
    31,408.73x = 550,650,813.68
  5. Step 5: Solve for x
    x = 550,650,813.68/31,408.73
  6. Step 6: Final answer
    x = 17,531.78

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1.5x scale

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.