Home / 31,435.46-47,123.90-21,579.38

Finding the Fourth Proportional to 31,435.46, 47,123.90 and 21,579.38

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Solution

The fourth proportional to 31,435.46, 47,123.90 and 21,579.38 is: 32,348.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,435.46 : 47,123.90 = 21,579.38 : x
  2. Step 2: Convert to fraction form
    31,435.46/47,123.90 = 21,579.38/x
  3. Step 3: Cross multiply
    31,435.46x = 47,123.90 × 21,579.38
  4. Step 4: Simplify right side
    31,435.46x = 1,016,904,437.29
  5. Step 5: Solve for x
    x = 1,016,904,437.29/31,435.46
  6. Step 6: Final answer
    x = 32,348.96

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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.