Home / 20,672,373-28,527,874.74-11,507,180.88

Finding the Fourth Proportional to 20,672,373, 28,527,874.74 and 11,507,180.88

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Solution

The fourth proportional to 20,672,373, 28,527,874.74 and 11,507,180.88 is: 15,879,909.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672,373 : 28,527,874.74 = 11,507,180.88 : x
  2. Step 2: Convert to fraction form
    20,672,373/28,527,874.74 = 11,507,180.88/x
  3. Step 3: Cross multiply
    20,672,373x = 28,527,874.74 × 11,507,180.88
  4. Step 4: Simplify right side
    20,672,373x = 328,275,414,755,163
  5. Step 5: Solve for x
    x = 328,275,414,755,163/20,672,373
  6. Step 6: Final answer
    x = 15,879,909.61

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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.