Home / 21,306.89-31,960.31-5,724.52

Finding the Fourth Proportional to 21,306.89, 31,960.31 and 5,724.52

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Solution

The fourth proportional to 21,306.89, 31,960.31 and 5,724.52 is: 8,586.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.89 : 31,960.31 = 5,724.52 : x
  2. Step 2: Convert to fraction form
    21,306.89/31,960.31 = 5,724.52/x
  3. Step 3: Cross multiply
    21,306.89x = 31,960.31 × 5,724.52
  4. Step 4: Simplify right side
    21,306.89x = 182,957,368.21
  5. Step 5: Solve for x
    x = 182,957,368.21/21,306.89
  6. Step 6: Final answer
    x = 8,586.77

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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.