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Finding the Fourth Proportional to 11,754.40, 17,612.40 and 10,103.20

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Solution

The fourth proportional to 11,754.40, 17,612.40 and 10,103.20 is: 15,138.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,754.40 : 17,612.40 = 10,103.20 : x
  2. Step 2: Convert to fraction form
    11,754.40/17,612.40 = 10,103.20/x
  3. Step 3: Cross multiply
    11,754.40x = 17,612.40 × 10,103.20
  4. Step 4: Simplify right side
    11,754.40x = 177,941,599.68
  5. Step 5: Solve for x
    x = 177,941,599.68/11,754.40
  6. Step 6: Final answer
    x = 15,138.30

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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.