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Finding the Fourth Proportional to 15,016.49, 20,723.19 and 8,644.12

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Solution

The fourth proportional to 15,016.49, 20,723.19 and 8,644.12 is: 11,929.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.49 : 20,723.19 = 8,644.12 : x
  2. Step 2: Convert to fraction form
    15,016.49/20,723.19 = 8,644.12/x
  3. Step 3: Cross multiply
    15,016.49x = 20,723.19 × 8,644.12
  4. Step 4: Simplify right side
    15,016.49x = 179,133,705.54
  5. Step 5: Solve for x
    x = 179,133,705.54/15,016.49
  6. Step 6: Final answer
    x = 11,929.13

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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.