Home / 20,478,889.20-30,718,333.80-12,442,976.40

Finding the Fourth Proportional to 20,478,889.20, 30,718,333.80 and 12,442,976.40

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Solution

The fourth proportional to 20,478,889.20, 30,718,333.80 and 12,442,976.40 is: 18,664,464.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,478,889.20 : 30,718,333.80 = 12,442,976.40 : x
  2. Step 2: Convert to fraction form
    20,478,889.20/30,718,333.80 = 12,442,976.40/x
  3. Step 3: Cross multiply
    20,478,889.20x = 30,718,333.80 × 12,442,976.40
  4. Step 4: Simplify right side
    20,478,889.20x = 382,227,502,520,722.31
  5. Step 5: Solve for x
    x = 382,227,502,520,722.31/20,478,889.20
  6. Step 6: Final answer
    x = 18,664,464.60

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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.