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Finding the Fourth Proportional to 15,092.25, 20,826.20 and 8,719.11

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Solution

The fourth proportional to 15,092.25, 20,826.20 and 8,719.11 is: 12,031.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,092.25 : 20,826.20 = 8,719.11 : x
  2. Step 2: Convert to fraction form
    15,092.25/20,826.20 = 8,719.11/x
  3. Step 3: Cross multiply
    15,092.25x = 20,826.20 × 8,719.11
  4. Step 4: Simplify right side
    15,092.25x = 181,585,885.09
  5. Step 5: Solve for x
    x = 181,585,885.09/15,092.25
  6. Step 6: Final answer
    x = 12,031.73

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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.