Home / 31,885.52-47,834.75-11,123.60

Finding the Fourth Proportional to 31,885.52, 47,834.75 and 11,123.60

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Solution

The fourth proportional to 31,885.52, 47,834.75 and 11,123.60 is: 16,687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,885.52 : 47,834.75 = 11,123.60 : x
  2. Step 2: Convert to fraction form
    31,885.52/47,834.75 = 11,123.60/x
  3. Step 3: Cross multiply
    31,885.52x = 47,834.75 × 11,123.60
  4. Step 4: Simplify right side
    31,885.52x = 532,094,413.74
  5. Step 5: Solve for x
    x = 532,094,413.74/31,885.52
  6. Step 6: Final answer
    x = 16,687.65

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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.