Home / 13,340.85-20,011.32-3,480.12

Finding the Fourth Proportional to 13,340.85, 20,011.32 and 3,480.12

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Solution

The fourth proportional to 13,340.85, 20,011.32 and 3,480.12 is: 5,220.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.85 : 20,011.32 = 3,480.12 : x
  2. Step 2: Convert to fraction form
    13,340.85/20,011.32 = 3,480.12/x
  3. Step 3: Cross multiply
    13,340.85x = 20,011.32 × 3,480.12
  4. Step 4: Simplify right side
    13,340.85x = 69,641,794.96
  5. Step 5: Solve for x
    x = 69,641,794.96/13,340.85
  6. Step 6: Final answer
    x = 5,220.19

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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.