Home / 21,234.27-31,839.04-15,615.30

Finding the Fourth Proportional to 21,234.27, 31,839.04 and 15,615.30

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Solution

The fourth proportional to 21,234.27, 31,839.04 and 15,615.30 is: 23,413.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,234.27 : 31,839.04 = 15,615.30 : x
  2. Step 2: Convert to fraction form
    21,234.27/31,839.04 = 15,615.30/x
  3. Step 3: Cross multiply
    21,234.27x = 31,839.04 × 15,615.30
  4. Step 4: Simplify right side
    21,234.27x = 497,176,161.31
  5. Step 5: Solve for x
    x = 497,176,161.31/21,234.27
  6. Step 6: Final answer
    x = 23,413.86

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1.5x scale

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.