Home / 20,479,769.43-30,719,443.87-11,838,371.40

Finding the Fourth Proportional to 20,479,769.43, 30,719,443.87 and 11,838,371.40

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Solution

The fourth proportional to 20,479,769.43, 30,719,443.87 and 11,838,371.40 is: 17,757,435.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479,769.43 : 30,719,443.87 = 11,838,371.40 : x
  2. Step 2: Convert to fraction form
    20,479,769.43/30,719,443.87 = 11,838,371.40/x
  3. Step 3: Cross multiply
    20,479,769.43x = 30,719,443.87 × 11,838,371.40
  4. Step 4: Simplify right side
    20,479,769.43x = 363,668,185,734,513.31
  5. Step 5: Solve for x
    x = 363,668,185,734,513.31/20,479,769.43
  6. Step 6: Final answer
    x = 17,757,435.55

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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.