Home / 11,015.16-15,200.80-5,979.56

Finding the Fourth Proportional to 11,015.16, 15,200.80 and 5,979.56

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Solution

The fourth proportional to 11,015.16, 15,200.80 and 5,979.56 is: 8,251.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,015.16 : 15,200.80 = 5,979.56 : x
  2. Step 2: Convert to fraction form
    11,015.16/15,200.80 = 5,979.56/x
  3. Step 3: Cross multiply
    11,015.16x = 15,200.80 × 5,979.56
  4. Step 4: Simplify right side
    11,015.16x = 90,894,004.70
  5. Step 5: Solve for x
    x = 90,894,004.70/11,015.16
  6. Step 6: Final answer
    x = 8,251.72

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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.