Home / 38,579.31-57,868.29-20,818.17

Finding the Fourth Proportional to 38,579.31, 57,868.29 and 20,818.17

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Solution

The fourth proportional to 38,579.31, 57,868.29 and 20,818.17 is: 31,226.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,579.31 : 57,868.29 = 20,818.17 : x
  2. Step 2: Convert to fraction form
    38,579.31/57,868.29 = 20,818.17/x
  3. Step 3: Cross multiply
    38,579.31x = 57,868.29 × 20,818.17
  4. Step 4: Simplify right side
    38,579.31x = 1,204,711,898.83
  5. Step 5: Solve for x
    x = 1,204,711,898.83/38,579.31
  6. Step 6: Final answer
    x = 31,226.89

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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.