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Finding the Fourth Proportional to 12,302.70, 16,979.88 and 7,266.57

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Solution

The fourth proportional to 12,302.70, 16,979.88 and 7,266.57 is: 10,029.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302.70 : 16,979.88 = 7,266.57 : x
  2. Step 2: Convert to fraction form
    12,302.70/16,979.88 = 7,266.57/x
  3. Step 3: Cross multiply
    12,302.70x = 16,979.88 × 7,266.57
  4. Step 4: Simplify right side
    12,302.70x = 123,385,486.61
  5. Step 5: Solve for x
    x = 123,385,486.61/12,302.70
  6. Step 6: Final answer
    x = 10,029.14

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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.