Home / 22,211.09-30,651.23-12,139.53

Finding the Fourth Proportional to 22,211.09, 30,651.23 and 12,139.53

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Solution

The fourth proportional to 22,211.09, 30,651.23 and 12,139.53 is: 16,752.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,211.09 : 30,651.23 = 12,139.53 : x
  2. Step 2: Convert to fraction form
    22,211.09/30,651.23 = 12,139.53/x
  3. Step 3: Cross multiply
    22,211.09x = 30,651.23 × 12,139.53
  4. Step 4: Simplify right side
    22,211.09x = 372,091,556.47
  5. Step 5: Solve for x
    x = 372,091,556.47/22,211.09
  6. Step 6: Final answer
    x = 16,752.51

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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.