Home / 12,911.26-19,372.62-5,520.40

Finding the Fourth Proportional to 12,911.26, 19,372.62 and 5,520.40

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Solution

The fourth proportional to 12,911.26, 19,372.62 and 5,520.40 is: 8,283.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.26 : 19,372.62 = 5,520.40 : x
  2. Step 2: Convert to fraction form
    12,911.26/19,372.62 = 5,520.40/x
  3. Step 3: Cross multiply
    12,911.26x = 19,372.62 × 5,520.40
  4. Step 4: Simplify right side
    12,911.26x = 106,944,611.45
  5. Step 5: Solve for x
    x = 106,944,611.45/12,911.26
  6. Step 6: Final answer
    x = 8,283.05

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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.