Home / 13,320.10-19,982.99-3,960.15

Finding the Fourth Proportional to 13,320.10, 19,982.99 and 3,960.15

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Solution

The fourth proportional to 13,320.10, 19,982.99 and 3,960.15 is: 5,941.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.10 : 19,982.99 = 3,960.15 : x
  2. Step 2: Convert to fraction form
    13,320.10/19,982.99 = 3,960.15/x
  3. Step 3: Cross multiply
    13,320.10x = 19,982.99 × 3,960.15
  4. Step 4: Simplify right side
    13,320.10x = 79,135,637.85
  5. Step 5: Solve for x
    x = 79,135,637.85/13,320.10
  6. Step 6: Final answer
    x = 5,941.07

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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.