Home / 31,974.64-47,969.24-9,789.76

Finding the Fourth Proportional to 31,974.64, 47,969.24 and 9,789.76

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Solution

The fourth proportional to 31,974.64, 47,969.24 and 9,789.76 is: 14,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,974.64 : 47,969.24 = 9,789.76 : x
  2. Step 2: Convert to fraction form
    31,974.64/47,969.24 = 9,789.76/x
  3. Step 3: Cross multiply
    31,974.64x = 47,969.24 × 9,789.76
  4. Step 4: Simplify right side
    31,974.64x = 469,607,346.98
  5. Step 5: Solve for x
    x = 469,607,346.98/31,974.64
  6. Step 6: Final answer
    x = 14,686.87

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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.