Home / 20,578,191.28-28,398,425.34-11,286,131.29

Finding the Fourth Proportional to 20,578,191.28, 28,398,425.34 and 11,286,131.29

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Solution

The fourth proportional to 20,578,191.28, 28,398,425.34 and 11,286,131.29 is: 15,575,147.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578,191.28 : 28,398,425.34 = 11,286,131.29 : x
  2. Step 2: Convert to fraction form
    20,578,191.28/28,398,425.34 = 11,286,131.29/x
  3. Step 3: Cross multiply
    20,578,191.28x = 28,398,425.34 × 11,286,131.29
  4. Step 4: Simplify right side
    20,578,191.28x = 320,508,356,787,829.81
  5. Step 5: Solve for x
    x = 320,508,356,787,829.81/20,578,191.28
  6. Step 6: Final answer
    x = 15,575,147.13

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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.