Home / 20,561,567.66-28,373,989.91-12,306,178.47

Finding the Fourth Proportional to 20,561,567.66, 28,373,989.91 and 12,306,178.47

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Solution

The fourth proportional to 20,561,567.66, 28,373,989.91 and 12,306,178.47 is: 16,981,943.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561,567.66 : 28,373,989.91 = 12,306,178.47 : x
  2. Step 2: Convert to fraction form
    20,561,567.66/28,373,989.91 = 12,306,178.47/x
  3. Step 3: Cross multiply
    20,561,567.66x = 28,373,989.91 × 12,306,178.47
  4. Step 4: Simplify right side
    20,561,567.66x = 349,175,383,738,439.25
  5. Step 5: Solve for x
    x = 349,175,383,738,439.25/20,561,567.66
  6. Step 6: Final answer
    x = 16,981,943.67

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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.