Home / 13,419,011.20-20,128,516.80-9,309,200.80

Finding the Fourth Proportional to 13,419,011.20, 20,128,516.80 and 9,309,200.80

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Solution

The fourth proportional to 13,419,011.20, 20,128,516.80 and 9,309,200.80 is: 13,963,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419,011.20 : 20,128,516.80 = 9,309,200.80 : x
  2. Step 2: Convert to fraction form
    13,419,011.20/20,128,516.80 = 9,309,200.80/x
  3. Step 3: Cross multiply
    13,419,011.20x = 20,128,516.80 × 9,309,200.80
  4. Step 4: Simplify right side
    13,419,011.20x = 187,380,404,697,373.47
  5. Step 5: Solve for x
    x = 187,380,404,697,373.47/13,419,011.20
  6. Step 6: Final answer
    x = 13,963,801.20

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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.