Home / 19,431,380.20-29,147,070.30-9,331,565.80

Finding the Fourth Proportional to 19,431,380.20, 29,147,070.30 and 9,331,565.80

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Solution

The fourth proportional to 19,431,380.20, 29,147,070.30 and 9,331,565.80 is: 13,997,348.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431,380.20 : 29,147,070.30 = 9,331,565.80 : x
  2. Step 2: Convert to fraction form
    19,431,380.20/29,147,070.30 = 9,331,565.80/x
  3. Step 3: Cross multiply
    19,431,380.20x = 29,147,070.30 × 9,331,565.80
  4. Step 4: Simplify right side
    19,431,380.20x = 271,987,804,381,675.78
  5. Step 5: Solve for x
    x = 271,987,804,381,675.78/19,431,380.20
  6. Step 6: Final answer
    x = 13,997,348.70

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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.