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Finding the Fourth Proportional to 12,225.84, 16,882 and 7,757.52

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Solution

The fourth proportional to 12,225.84, 16,882 and 7,757.52 is: 10,711.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.84 : 16,882 = 7,757.52 : x
  2. Step 2: Convert to fraction form
    12,225.84/16,882 = 7,757.52/x
  3. Step 3: Cross multiply
    12,225.84x = 16,882 × 7,757.52
  4. Step 4: Simplify right side
    12,225.84x = 130,962,431.54
  5. Step 5: Solve for x
    x = 130,962,431.54/12,225.84
  6. Step 6: Final answer
    x = 10,711.94

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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.