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Finding the Fourth Proportional to 10,958.70, 15,122.97 and 6,243.78

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Solution

The fourth proportional to 10,958.70, 15,122.97 and 6,243.78 is: 8,616.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,958.70 : 15,122.97 = 6,243.78 : x
  2. Step 2: Convert to fraction form
    10,958.70/15,122.97 = 6,243.78/x
  3. Step 3: Cross multiply
    10,958.70x = 15,122.97 × 6,243.78
  4. Step 4: Simplify right side
    10,958.70x = 94,424,497.63
  5. Step 5: Solve for x
    x = 94,424,497.63/10,958.70
  6. Step 6: Final answer
    x = 8,616.40

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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.