Home / 10,420.55-15,632.80-3,399.98

Finding the Fourth Proportional to 10,420.55, 15,632.80 and 3,399.98

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Solution

The fourth proportional to 10,420.55, 15,632.80 and 3,399.98 is: 5,100.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.55 : 15,632.80 = 3,399.98 : x
  2. Step 2: Convert to fraction form
    10,420.55/15,632.80 = 3,399.98/x
  3. Step 3: Cross multiply
    10,420.55x = 15,632.80 × 3,399.98
  4. Step 4: Simplify right side
    10,420.55x = 53,151,120.68
  5. Step 5: Solve for x
    x = 53,151,120.68/10,420.55
  6. Step 6: Final answer
    x = 5,100.61

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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.