Home / 13,340.53-20,010.81-3,479.80

Finding the Fourth Proportional to 13,340.53, 20,010.81 and 3,479.80

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Solution

The fourth proportional to 13,340.53, 20,010.81 and 3,479.80 is: 5,219.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.53 : 20,010.81 = 3,479.80 : x
  2. Step 2: Convert to fraction form
    13,340.53/20,010.81 = 3,479.80/x
  3. Step 3: Cross multiply
    13,340.53x = 20,010.81 × 3,479.80
  4. Step 4: Simplify right side
    13,340.53x = 69,633,616.64
  5. Step 5: Solve for x
    x = 69,633,616.64/13,340.53
  6. Step 6: Final answer
    x = 5,219.70

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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.