Home / 11,378.20-17,067.30-10,125.40

Finding the Fourth Proportional to 11,378.20, 17,067.30 and 10,125.40

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Solution

The fourth proportional to 11,378.20, 17,067.30 and 10,125.40 is: 15,188.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,378.20 : 17,067.30 = 10,125.40 : x
  2. Step 2: Convert to fraction form
    11,378.20/17,067.30 = 10,125.40/x
  3. Step 3: Cross multiply
    11,378.20x = 17,067.30 × 10,125.40
  4. Step 4: Simplify right side
    11,378.20x = 172,813,239.42
  5. Step 5: Solve for x
    x = 172,813,239.42/11,378.20
  6. Step 6: Final answer
    x = 15,188.10

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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.