Home / 20,317.33-30,471.15-8,471.28

Finding the Fourth Proportional to 20,317.33, 30,471.15 and 8,471.28

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Solution

The fourth proportional to 20,317.33, 30,471.15 and 8,471.28 is: 12,704.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.33 : 30,471.15 = 8,471.28 : x
  2. Step 2: Convert to fraction form
    20,317.33/30,471.15 = 8,471.28/x
  3. Step 3: Cross multiply
    20,317.33x = 30,471.15 × 8,471.28
  4. Step 4: Simplify right side
    20,317.33x = 258,129,643.57
  5. Step 5: Solve for x
    x = 258,129,643.57/20,317.33
  6. Step 6: Final answer
    x = 12,704.90

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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.