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Finding the Fourth Proportional to 15,350.80, 23,018.64 and 4,961.20

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Solution

The fourth proportional to 15,350.80, 23,018.64 and 4,961.20 is: 7,439.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,350.80 : 23,018.64 = 4,961.20 : x
  2. Step 2: Convert to fraction form
    15,350.80/23,018.64 = 4,961.20/x
  3. Step 3: Cross multiply
    15,350.80x = 23,018.64 × 4,961.20
  4. Step 4: Simplify right side
    15,350.80x = 114,200,076.77
  5. Step 5: Solve for x
    x = 114,200,076.77/15,350.80
  6. Step 6: Final answer
    x = 7,439.36

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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.