Home / 13,419,010.70-20,128,516.05-9,309,200.30

Finding the Fourth Proportional to 13,419,010.70, 20,128,516.05 and 9,309,200.30

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Solution

The fourth proportional to 13,419,010.70, 20,128,516.05 and 9,309,200.30 is: 13,963,800.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419,010.70 : 20,128,516.05 = 9,309,200.30 : x
  2. Step 2: Convert to fraction form
    13,419,010.70/20,128,516.05 = 9,309,200.30/x
  3. Step 3: Cross multiply
    13,419,010.70x = 20,128,516.05 × 9,309,200.30
  4. Step 4: Simplify right side
    13,419,010.70x = 187,380,387,651,214.84
  5. Step 5: Solve for x
    x = 187,380,387,651,214.84/13,419,010.70
  6. Step 6: Final answer
    x = 13,963,800.45

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Similar ratio
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1.5x scale

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.