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Finding the Fourth Proportional to 12,598.68, 18,872.10 and 7,392

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Solution

The fourth proportional to 12,598.68, 18,872.10 and 7,392 is: 11,072.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,598.68 : 18,872.10 = 7,392 : x
  2. Step 2: Convert to fraction form
    12,598.68/18,872.10 = 7,392/x
  3. Step 3: Cross multiply
    12,598.68x = 18,872.10 × 7,392
  4. Step 4: Simplify right side
    12,598.68x = 139,502,563.20
  5. Step 5: Solve for x
    x = 139,502,563.20/12,598.68
  6. Step 6: Final answer
    x = 11,072.79

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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.