Home / 22,200.06-30,634.89-12,642.30

Finding the Fourth Proportional to 22,200.06, 30,634.89 and 12,642.30

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Solution

The fourth proportional to 22,200.06, 30,634.89 and 12,642.30 is: 17,445.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,200.06 : 30,634.89 = 12,642.30 : x
  2. Step 2: Convert to fraction form
    22,200.06/30,634.89 = 12,642.30/x
  3. Step 3: Cross multiply
    22,200.06x = 30,634.89 × 12,642.30
  4. Step 4: Simplify right side
    22,200.06x = 387,295,469.85
  5. Step 5: Solve for x
    x = 387,295,469.85/22,200.06
  6. Step 6: Final answer
    x = 17,445.69

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1.5x scale

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.