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Finding the Fourth Proportional to 12,343.68, 18,515.16 and 4,554

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Solution

The fourth proportional to 12,343.68, 18,515.16 and 4,554 is: 6,830.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,343.68 : 18,515.16 = 4,554 : x
  2. Step 2: Convert to fraction form
    12,343.68/18,515.16 = 4,554/x
  3. Step 3: Cross multiply
    12,343.68x = 18,515.16 × 4,554
  4. Step 4: Simplify right side
    12,343.68x = 84,318,038.64
  5. Step 5: Solve for x
    x = 84,318,038.64/12,343.68
  6. Step 6: Final answer
    x = 6,830.87

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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.