Home / 20,206,789.97-30,329,347.41-12,507,144.08

Finding the Fourth Proportional to 20,206,789.97, 30,329,347.41 and 12,507,144.08

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Solution

The fourth proportional to 20,206,789.97, 30,329,347.41 and 12,507,144.08 is: 18,772,576.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206,789.97 : 30,329,347.41 = 12,507,144.08 : x
  2. Step 2: Convert to fraction form
    20,206,789.97/30,329,347.41 = 12,507,144.08/x
  3. Step 3: Cross multiply
    20,206,789.97x = 30,329,347.41 × 12,507,144.08
  4. Step 4: Simplify right side
    20,206,789.97x = 379,333,517,909,244.81
  5. Step 5: Solve for x
    x = 379,333,517,909,244.81/20,206,789.97
  6. Step 6: Final answer
    x = 18,772,576.87

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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.