Home / 12,613.06-18,920.12-3,728.41

Finding the Fourth Proportional to 12,613.06, 18,920.12 and 3,728.41

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Solution

The fourth proportional to 12,613.06, 18,920.12 and 3,728.41 is: 5,592.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.06 : 18,920.12 = 3,728.41 : x
  2. Step 2: Convert to fraction form
    12,613.06/18,920.12 = 3,728.41/x
  3. Step 3: Cross multiply
    12,613.06x = 18,920.12 × 3,728.41
  4. Step 4: Simplify right side
    12,613.06x = 70,541,851.37
  5. Step 5: Solve for x
    x = 70,541,851.37/12,613.06
  6. Step 6: Final answer
    x = 5,592.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.