Home / 13,520.69-20,280.68-6,119.75

Finding the Fourth Proportional to 13,520.69, 20,280.68 and 6,119.75

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Solution

The fourth proportional to 13,520.69, 20,280.68 and 6,119.75 is: 9,179.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.69 : 20,280.68 = 6,119.75 : x
  2. Step 2: Convert to fraction form
    13,520.69/20,280.68 = 6,119.75/x
  3. Step 3: Cross multiply
    13,520.69x = 20,280.68 × 6,119.75
  4. Step 4: Simplify right side
    13,520.69x = 124,112,734.48
  5. Step 5: Solve for x
    x = 124,112,734.48/13,520.69
  6. Step 6: Final answer
    x = 9,179.47

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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.