Home / 13,561,399.47-18,719,642.13-8,979,197.07

Finding the Fourth Proportional to 13,561,399.47, 18,719,642.13 and 8,979,197.07

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Solution

The fourth proportional to 13,561,399.47, 18,719,642.13 and 8,979,197.07 is: 12,394,543.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561,399.47 : 18,719,642.13 = 8,979,197.07 : x
  2. Step 2: Convert to fraction form
    13,561,399.47/18,719,642.13 = 8,979,197.07/x
  3. Step 3: Cross multiply
    13,561,399.47x = 18,719,642.13 × 8,979,197.07
  4. Step 4: Simplify right side
    13,561,399.47x = 168,087,355,765,144.56
  5. Step 5: Solve for x
    x = 168,087,355,765,144.56/13,561,399.47
  6. Step 6: Final answer
    x = 12,394,543.51

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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.