Home / 10,108.80-15,138.90-4,908.60

Finding the Fourth Proportional to 10,108.80, 15,138.90 and 4,908.60

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Solution

The fourth proportional to 10,108.80, 15,138.90 and 4,908.60 is: 7,351.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,108.80 : 15,138.90 = 4,908.60 : x
  2. Step 2: Convert to fraction form
    10,108.80/15,138.90 = 4,908.60/x
  3. Step 3: Cross multiply
    10,108.80x = 15,138.90 × 4,908.60
  4. Step 4: Simplify right side
    10,108.80x = 74,310,804.54
  5. Step 5: Solve for x
    x = 74,310,804.54/10,108.80
  6. Step 6: Final answer
    x = 7,351.10

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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.