Home / 13,919.32-20,880.18-3,531.07

Finding the Fourth Proportional to 13,919.32, 20,880.18 and 3,531.07

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Solution

The fourth proportional to 13,919.32, 20,880.18 and 3,531.07 is: 5,296.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.32 : 20,880.18 = 3,531.07 : x
  2. Step 2: Convert to fraction form
    13,919.32/20,880.18 = 3,531.07/x
  3. Step 3: Cross multiply
    13,919.32x = 20,880.18 × 3,531.07
  4. Step 4: Simplify right side
    13,919.32x = 73,729,377.19
  5. Step 5: Solve for x
    x = 73,729,377.19/13,919.32
  6. Step 6: Final answer
    x = 5,296.91

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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.