Home / 13,722.06-20,608.20-12,565.38

Finding the Fourth Proportional to 13,722.06, 20,608.20 and 12,565.38

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Solution

The fourth proportional to 13,722.06, 20,608.20 and 12,565.38 is: 18,871.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.06 : 20,608.20 = 12,565.38 : x
  2. Step 2: Convert to fraction form
    13,722.06/20,608.20 = 12,565.38/x
  3. Step 3: Cross multiply
    13,722.06x = 20,608.20 × 12,565.38
  4. Step 4: Simplify right side
    13,722.06x = 258,949,864.12
  5. Step 5: Solve for x
    x = 258,949,864.12/13,722.06
  6. Step 6: Final answer
    x = 18,871.06

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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.