Home / 10,325.78-15,487.34-3,305.20

Finding the Fourth Proportional to 10,325.78, 15,487.34 and 3,305.20

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Solution

The fourth proportional to 10,325.78, 15,487.34 and 3,305.20 is: 4,957.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,325.78 : 15,487.34 = 3,305.20 : x
  2. Step 2: Convert to fraction form
    10,325.78/15,487.34 = 3,305.20/x
  3. Step 3: Cross multiply
    10,325.78x = 15,487.34 × 3,305.20
  4. Step 4: Simplify right side
    10,325.78x = 51,188,756.17
  5. Step 5: Solve for x
    x = 51,188,756.17/10,325.78
  6. Step 6: Final answer
    x = 4,957.37

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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.