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Finding the Fourth Proportional to 13,452,203.20, 20,178,304.80 and 9,342,392.80

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Solution

The fourth proportional to 13,452,203.20, 20,178,304.80 and 9,342,392.80 is: 14,013,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,452,203.20 : 20,178,304.80 = 9,342,392.80 : x
  2. Step 2: Convert to fraction form
    13,452,203.20/20,178,304.80 = 9,342,392.80/x
  3. Step 3: Cross multiply
    13,452,203.20x = 20,178,304.80 × 9,342,392.80
  4. Step 4: Simplify right side
    13,452,203.20x = 188,513,649,479,725.47
  5. Step 5: Solve for x
    x = 188,513,649,479,725.47/13,452,203.20
  6. Step 6: Final answer
    x = 14,013,589.20

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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.