Home / 13,269,129.38-18,304,375.56-9,131,978.04

Finding the Fourth Proportional to 13,269,129.38, 18,304,375.56 and 9,131,978.04

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Solution

The fourth proportional to 13,269,129.38, 18,304,375.56 and 9,131,978.04 is: 12,597,296.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269,129.38 : 18,304,375.56 = 9,131,978.04 : x
  2. Step 2: Convert to fraction form
    13,269,129.38/18,304,375.56 = 9,131,978.04/x
  3. Step 3: Cross multiply
    13,269,129.38x = 18,304,375.56 × 9,131,978.04
  4. Step 4: Simplify right side
    13,269,129.38x = 167,155,155,649,832.69
  5. Step 5: Solve for x
    x = 167,155,155,649,832.69/13,269,129.38
  6. Step 6: Final answer
    x = 12,597,296.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.