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Finding the Fourth Proportional to 12,299.33, 18,437.64 and 4,902

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Solution

The fourth proportional to 12,299.33, 18,437.64 and 4,902 is: 7,348.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,299.33 : 18,437.64 = 4,902 : x
  2. Step 2: Convert to fraction form
    12,299.33/18,437.64 = 4,902/x
  3. Step 3: Cross multiply
    12,299.33x = 18,437.64 × 4,902
  4. Step 4: Simplify right side
    12,299.33x = 90,381,311.28
  5. Step 5: Solve for x
    x = 90,381,311.28/12,299.33
  6. Step 6: Final answer
    x = 7,348.48

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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.