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Finding the Fourth Proportional to 11,015, 15,200.56 and 5,979.22

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Solution

The fourth proportional to 11,015, 15,200.56 and 5,979.22 is: 8,251.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,015 : 15,200.56 = 5,979.22 : x
  2. Step 2: Convert to fraction form
    11,015/15,200.56 = 5,979.22/x
  3. Step 3: Cross multiply
    11,015x = 15,200.56 × 5,979.22
  4. Step 4: Simplify right side
    11,015x = 90,887,492.36
  5. Step 5: Solve for x
    x = 90,887,492.36/11,015
  6. Step 6: Final answer
    x = 8,251.25

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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.