Home / 10,440.99-15,660.92-3,420.11

Finding the Fourth Proportional to 10,440.99, 15,660.92 and 3,420.11

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Solution

The fourth proportional to 10,440.99, 15,660.92 and 3,420.11 is: 5,129.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,440.99 : 15,660.92 = 3,420.11 : x
  2. Step 2: Convert to fraction form
    10,440.99/15,660.92 = 3,420.11/x
  3. Step 3: Cross multiply
    10,440.99x = 15,660.92 × 3,420.11
  4. Step 4: Simplify right side
    10,440.99x = 53,561,973.70
  5. Step 5: Solve for x
    x = 53,561,973.70/10,440.99
  6. Step 6: Final answer
    x = 5,129.97

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1.5x scale

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.