Home / 31,947.72-47,928.06-11,185.80

Finding the Fourth Proportional to 31,947.72, 47,928.06 and 11,185.80

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Solution

The fourth proportional to 31,947.72, 47,928.06 and 11,185.80 is: 16,780.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,947.72 : 47,928.06 = 11,185.80 : x
  2. Step 2: Convert to fraction form
    31,947.72/47,928.06 = 11,185.80/x
  3. Step 3: Cross multiply
    31,947.72x = 47,928.06 × 11,185.80
  4. Step 4: Simplify right side
    31,947.72x = 536,113,693.55
  5. Step 5: Solve for x
    x = 536,113,693.55/31,947.72
  6. Step 6: Final answer
    x = 16,780.97

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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.