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Finding the Fourth Proportional to 15,318.24, 22,978.16 and 4,930.80

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Solution

The fourth proportional to 15,318.24, 22,978.16 and 4,930.80 is: 7,396.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318.24 : 22,978.16 = 4,930.80 : x
  2. Step 2: Convert to fraction form
    15,318.24/22,978.16 = 4,930.80/x
  3. Step 3: Cross multiply
    15,318.24x = 22,978.16 × 4,930.80
  4. Step 4: Simplify right side
    15,318.24x = 113,300,711.33
  5. Step 5: Solve for x
    x = 113,300,711.33/15,318.24
  6. Step 6: Final answer
    x = 7,396.46

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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.