Home / 31,904.25-47,856.78-11,127.75

Finding the Fourth Proportional to 31,904.25, 47,856.78 and 11,127.75

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Solution

The fourth proportional to 31,904.25, 47,856.78 and 11,127.75 is: 16,691.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,904.25 : 47,856.78 = 11,127.75 : x
  2. Step 2: Convert to fraction form
    31,904.25/47,856.78 = 11,127.75/x
  3. Step 3: Cross multiply
    31,904.25x = 47,856.78 × 11,127.75
  4. Step 4: Simplify right side
    31,904.25x = 532,538,283.65
  5. Step 5: Solve for x
    x = 532,538,283.65/31,904.25
  6. Step 6: Final answer
    x = 16,691.77

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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.