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Finding the Fourth Proportional to 15,014.16, 20,719.32 and 9,049.12

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Solution

The fourth proportional to 15,014.16, 20,719.32 and 9,049.12 is: 12,487.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.16 : 20,719.32 = 9,049.12 : x
  2. Step 2: Convert to fraction form
    15,014.16/20,719.32 = 9,049.12/x
  3. Step 3: Cross multiply
    15,014.16x = 20,719.32 × 9,049.12
  4. Step 4: Simplify right side
    15,014.16x = 187,491,566.11
  5. Step 5: Solve for x
    x = 187,491,566.11/15,014.16
  6. Step 6: Final answer
    x = 12,487.65

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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.