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Finding the Fourth Proportional to 22,049.66, 30,428.08 and 12,489.38

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Solution

The fourth proportional to 22,049.66, 30,428.08 and 12,489.38 is: 17,235.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,049.66 : 30,428.08 = 12,489.38 : x
  2. Step 2: Convert to fraction form
    22,049.66/30,428.08 = 12,489.38/x
  3. Step 3: Cross multiply
    22,049.66x = 30,428.08 × 12,489.38
  4. Step 4: Simplify right side
    22,049.66x = 380,027,853.79
  5. Step 5: Solve for x
    x = 380,027,853.79/22,049.66
  6. Step 6: Final answer
    x = 17,235.09

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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.