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Finding the Fourth Proportional to 12,357, 18,535.50 and 4,966.56

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Solution

The fourth proportional to 12,357, 18,535.50 and 4,966.56 is: 7,449.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357 : 18,535.50 = 4,966.56 : x
  2. Step 2: Convert to fraction form
    12,357/18,535.50 = 4,966.56/x
  3. Step 3: Cross multiply
    12,357x = 18,535.50 × 4,966.56
  4. Step 4: Simplify right side
    12,357x = 92,057,672.88
  5. Step 5: Solve for x
    x = 92,057,672.88/12,357
  6. Step 6: Final answer
    x = 7,449.84

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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.