Home / 10,420.20-15,631.34-3,399.93

Finding the Fourth Proportional to 10,420.20, 15,631.34 and 3,399.93

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Solution

The fourth proportional to 10,420.20, 15,631.34 and 3,399.93 is: 5,100.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.20 : 15,631.34 = 3,399.93 : x
  2. Step 2: Convert to fraction form
    10,420.20/15,631.34 = 3,399.93/x
  3. Step 3: Cross multiply
    10,420.20x = 15,631.34 × 3,399.93
  4. Step 4: Simplify right side
    10,420.20x = 53,145,503.42
  5. Step 5: Solve for x
    x = 53,145,503.42/10,420.20
  6. Step 6: Final answer
    x = 5,100.24

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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.