Home / 20,811,519.93-31,228,043.76-15,101,331.78

Finding the Fourth Proportional to 20,811,519.93, 31,228,043.76 and 15,101,331.78

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Solution

The fourth proportional to 20,811,519.93, 31,228,043.76 and 15,101,331.78 is: 22,659,808.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811,519.93 : 31,228,043.76 = 15,101,331.78 : x
  2. Step 2: Convert to fraction form
    20,811,519.93/31,228,043.76 = 15,101,331.78/x
  3. Step 3: Cross multiply
    20,811,519.93x = 31,228,043.76 × 15,101,331.78
  4. Step 4: Simplify right side
    20,811,519.93x = 471,585,049,660,118.69
  5. Step 5: Solve for x
    x = 471,585,049,660,118.69/20,811,519.93
  6. Step 6: Final answer
    x = 22,659,808.19

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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.