Home / 13,410.90-20,113.38-5,511.42

Finding the Fourth Proportional to 13,410.90, 20,113.38 and 5,511.42

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Solution

The fourth proportional to 13,410.90, 20,113.38 and 5,511.42 is: 8,265.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.90 : 20,113.38 = 5,511.42 : x
  2. Step 2: Convert to fraction form
    13,410.90/20,113.38 = 5,511.42/x
  3. Step 3: Cross multiply
    13,410.90x = 20,113.38 × 5,511.42
  4. Step 4: Simplify right side
    13,410.90x = 110,853,284.80
  5. Step 5: Solve for x
    x = 110,853,284.80/13,410.90
  6. Step 6: Final answer
    x = 8,265.91

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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.