Home / 12,478,531.20-18,717,796.80-8,368,720.80

Finding the Fourth Proportional to 12,478,531.20, 18,717,796.80 and 8,368,720.80

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Solution

The fourth proportional to 12,478,531.20, 18,717,796.80 and 8,368,720.80 is: 12,553,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,531.20 : 18,717,796.80 = 8,368,720.80 : x
  2. Step 2: Convert to fraction form
    12,478,531.20/18,717,796.80 = 8,368,720.80/x
  3. Step 3: Cross multiply
    12,478,531.20x = 18,717,796.80 × 8,368,720.80
  4. Step 4: Simplify right side
    12,478,531.20x = 156,644,015,410,333.44
  5. Step 5: Solve for x
    x = 156,644,015,410,333.44/12,478,531.20
  6. Step 6: Final answer
    x = 12,553,081.20

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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.