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Finding the Fourth Proportional to 12,616.25, 18,990.16 and 10,713.56

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Solution

The fourth proportional to 12,616.25, 18,990.16 and 10,713.56 is: 16,126.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,616.25 : 18,990.16 = 10,713.56 : x
  2. Step 2: Convert to fraction form
    12,616.25/18,990.16 = 10,713.56/x
  3. Step 3: Cross multiply
    12,616.25x = 18,990.16 × 10,713.56
  4. Step 4: Simplify right side
    12,616.25x = 203,452,096.83
  5. Step 5: Solve for x
    x = 203,452,096.83/12,616.25
  6. Step 6: Final answer
    x = 16,126.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.