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Finding the Fourth Proportional to 12,244.98, 18,372.90 and 6,979.80

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Solution

The fourth proportional to 12,244.98, 18,372.90 and 6,979.80 is: 10,472.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,244.98 : 18,372.90 = 6,979.80 : x
  2. Step 2: Convert to fraction form
    12,244.98/18,372.90 = 6,979.80/x
  3. Step 3: Cross multiply
    12,244.98x = 18,372.90 × 6,979.80
  4. Step 4: Simplify right side
    12,244.98x = 128,239,167.42
  5. Step 5: Solve for x
    x = 128,239,167.42/12,244.98
  6. Step 6: Final answer
    x = 10,472.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.