Home / 10,439.73-15,660.21-3,420.48

Finding the Fourth Proportional to 10,439.73, 15,660.21 and 3,420.48

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Solution

The fourth proportional to 10,439.73, 15,660.21 and 3,420.48 is: 5,130.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,439.73 : 15,660.21 = 3,420.48 : x
  2. Step 2: Convert to fraction form
    10,439.73/15,660.21 = 3,420.48/x
  3. Step 3: Cross multiply
    10,439.73x = 15,660.21 × 3,420.48
  4. Step 4: Simplify right side
    10,439.73x = 53,565,435.10
  5. Step 5: Solve for x
    x = 53,565,435.10/10,439.73
  6. Step 6: Final answer
    x = 5,130.92

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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.