Home / 19,380.72-29,074.11-8,287.46

Finding the Fourth Proportional to 19,380.72, 29,074.11 and 8,287.46

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Solution

The fourth proportional to 19,380.72, 29,074.11 and 8,287.46 is: 12,432.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,380.72 : 29,074.11 = 8,287.46 : x
  2. Step 2: Convert to fraction form
    19,380.72/29,074.11 = 8,287.46/x
  3. Step 3: Cross multiply
    19,380.72x = 29,074.11 × 8,287.46
  4. Step 4: Simplify right side
    19,380.72x = 240,950,378.29
  5. Step 5: Solve for x
    x = 240,950,378.29/19,380.72
  6. Step 6: Final answer
    x = 12,432.48

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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.