Home / 22,198.78-30,630.18-13,125.57

Finding the Fourth Proportional to 22,198.78, 30,630.18 and 13,125.57

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Solution

The fourth proportional to 22,198.78, 30,630.18 and 13,125.57 is: 18,110.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,198.78 : 30,630.18 = 13,125.57 : x
  2. Step 2: Convert to fraction form
    22,198.78/30,630.18 = 13,125.57/x
  3. Step 3: Cross multiply
    22,198.78x = 30,630.18 × 13,125.57
  4. Step 4: Simplify right side
    22,198.78x = 402,038,571.70
  5. Step 5: Solve for x
    x = 402,038,571.70/22,198.78
  6. Step 6: Final answer
    x = 18,110.84

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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.