Home / 15,147.44-20,902-11,170.72

Finding the Fourth Proportional to 15,147.44, 20,902 and 11,170.72

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Solution

The fourth proportional to 15,147.44, 20,902 and 11,170.72 is: 15,414.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,147.44 : 20,902 = 11,170.72 : x
  2. Step 2: Convert to fraction form
    15,147.44/20,902 = 11,170.72/x
  3. Step 3: Cross multiply
    15,147.44x = 20,902 × 11,170.72
  4. Step 4: Simplify right side
    15,147.44x = 233,490,389.44
  5. Step 5: Solve for x
    x = 233,490,389.44/15,147.44
  6. Step 6: Final answer
    x = 15,414.51

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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.