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Finding the Fourth Proportional to 12,224.28, 16,869.42 and 6,919.14

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Solution

The fourth proportional to 12,224.28, 16,869.42 and 6,919.14 is: 9,548.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,224.28 : 16,869.42 = 6,919.14 : x
  2. Step 2: Convert to fraction form
    12,224.28/16,869.42 = 6,919.14/x
  3. Step 3: Cross multiply
    12,224.28x = 16,869.42 × 6,919.14
  4. Step 4: Simplify right side
    12,224.28x = 116,721,878.70
  5. Step 5: Solve for x
    x = 116,721,878.70/12,224.28
  6. Step 6: Final answer
    x = 9,548.36

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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.