Home / 31,813.76-47,717.40-8,442.56

Finding the Fourth Proportional to 31,813.76, 47,717.40 and 8,442.56

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Solution

The fourth proportional to 31,813.76, 47,717.40 and 8,442.56 is: 12,662.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,813.76 : 47,717.40 = 8,442.56 : x
  2. Step 2: Convert to fraction form
    31,813.76/47,717.40 = 8,442.56/x
  3. Step 3: Cross multiply
    31,813.76x = 47,717.40 × 8,442.56
  4. Step 4: Simplify right side
    31,813.76x = 402,857,012.54
  5. Step 5: Solve for x
    x = 402,857,012.54/31,813.76
  6. Step 6: Final answer
    x = 12,662.98

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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.