Home / 12,485,411.20-18,723,451.20-8,687,612.80

Finding the Fourth Proportional to 12,485,411.20, 18,723,451.20 and 8,687,612.80

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Solution

The fourth proportional to 12,485,411.20, 18,723,451.20 and 8,687,612.80 is: 13,028,172.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485,411.20 : 18,723,451.20 = 8,687,612.80 : x
  2. Step 2: Convert to fraction form
    12,485,411.20/18,723,451.20 = 8,687,612.80/x
  3. Step 3: Cross multiply
    12,485,411.20x = 18,723,451.20 × 8,687,612.80
  4. Step 4: Simplify right side
    12,485,411.20x = 162,662,094,305,295.38
  5. Step 5: Solve for x
    x = 162,662,094,305,295.38/12,485,411.20
  6. Step 6: Final answer
    x = 13,028,172.78

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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.