Home / 20,811,520.93-31,228,045.26-15,101,332.78

Finding the Fourth Proportional to 20,811,520.93, 31,228,045.26 and 15,101,332.78

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Solution

The fourth proportional to 20,811,520.93, 31,228,045.26 and 15,101,332.78 is: 22,659,809.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811,520.93 : 31,228,045.26 = 15,101,332.78 : x
  2. Step 2: Convert to fraction form
    20,811,520.93/31,228,045.26 = 15,101,332.78/x
  3. Step 3: Cross multiply
    20,811,520.93x = 31,228,045.26 × 15,101,332.78
  4. Step 4: Simplify right side
    20,811,520.93x = 471,585,103,540,161.62
  5. Step 5: Solve for x
    x = 471,585,103,540,161.62/20,811,520.93
  6. Step 6: Final answer
    x = 22,659,809.69

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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.