Home / 19,420.20-29,131.98-5,380.24

Finding the Fourth Proportional to 19,420.20, 29,131.98 and 5,380.24

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Solution

The fourth proportional to 19,420.20, 29,131.98 and 5,380.24 is: 8,070.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,420.20 : 29,131.98 = 5,380.24 : x
  2. Step 2: Convert to fraction form
    19,420.20/29,131.98 = 5,380.24/x
  3. Step 3: Cross multiply
    19,420.20x = 29,131.98 × 5,380.24
  4. Step 4: Simplify right side
    19,420.20x = 156,737,044.08
  5. Step 5: Solve for x
    x = 156,737,044.08/19,420.20
  6. Step 6: Final answer
    x = 8,070.83

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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.