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Finding the Fourth Proportional to 12,218.28, 16,862.28 and 6,914.13

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Solution

The fourth proportional to 12,218.28, 16,862.28 and 6,914.13 is: 9,542.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.28 : 16,862.28 = 6,914.13 : x
  2. Step 2: Convert to fraction form
    12,218.28/16,862.28 = 6,914.13/x
  3. Step 3: Cross multiply
    12,218.28x = 16,862.28 × 6,914.13
  4. Step 4: Simplify right side
    12,218.28x = 116,587,996.02
  5. Step 5: Solve for x
    x = 116,587,996.02/12,218.28
  6. Step 6: Final answer
    x = 9,542.10

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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.