Home / 10,420.62-15,632.55-3,493.50

Finding the Fourth Proportional to 10,420.62, 15,632.55 and 3,493.50

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Solution

The fourth proportional to 10,420.62, 15,632.55 and 3,493.50 is: 5,240.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.62 : 15,632.55 = 3,493.50 : x
  2. Step 2: Convert to fraction form
    10,420.62/15,632.55 = 3,493.50/x
  3. Step 3: Cross multiply
    10,420.62x = 15,632.55 × 3,493.50
  4. Step 4: Simplify right side
    10,420.62x = 54,612,313.43
  5. Step 5: Solve for x
    x = 54,612,313.43/10,420.62
  6. Step 6: Final answer
    x = 5,240.79

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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.