Home / 31,956.41-47,947.78-13,240.22

Finding the Fourth Proportional to 31,956.41, 47,947.78 and 13,240.22

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Solution

The fourth proportional to 31,956.41, 47,947.78 and 13,240.22 is: 19,865.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,956.41 : 47,947.78 = 13,240.22 : x
  2. Step 2: Convert to fraction form
    31,956.41/47,947.78 = 13,240.22/x
  3. Step 3: Cross multiply
    31,956.41x = 47,947.78 × 13,240.22
  4. Step 4: Simplify right side
    31,956.41x = 634,838,932.52
  5. Step 5: Solve for x
    x = 634,838,932.52/31,956.41
  6. Step 6: Final answer
    x = 19,865.78

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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.