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Finding the Fourth Proportional to 11,153.70, 15,392.13 and 6,118.13

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Solution

The fourth proportional to 11,153.70, 15,392.13 and 6,118.13 is: 8,443.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.70 : 15,392.13 = 6,118.13 : x
  2. Step 2: Convert to fraction form
    11,153.70/15,392.13 = 6,118.13/x
  3. Step 3: Cross multiply
    11,153.70x = 15,392.13 × 6,118.13
  4. Step 4: Simplify right side
    11,153.70x = 94,171,067.85
  5. Step 5: Solve for x
    x = 94,171,067.85/11,153.70
  6. Step 6: Final answer
    x = 8,443.03

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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.