Home / 11,439.97-15,788.15-6,404.10

Finding the Fourth Proportional to 11,439.97, 15,788.15 and 6,404.10

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Solution

The fourth proportional to 11,439.97, 15,788.15 and 6,404.10 is: 8,838.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.97 : 15,788.15 = 6,404.10 : x
  2. Step 2: Convert to fraction form
    11,439.97/15,788.15 = 6,404.10/x
  3. Step 3: Cross multiply
    11,439.97x = 15,788.15 × 6,404.10
  4. Step 4: Simplify right side
    11,439.97x = 101,108,824.20
  5. Step 5: Solve for x
    x = 101,108,824.20/11,439.97
  6. Step 6: Final answer
    x = 8,838.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.