Home / 10,979.64-15,153.90-6,997.56

Finding the Fourth Proportional to 10,979.64, 15,153.90 and 6,997.56

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Solution

The fourth proportional to 10,979.64, 15,153.90 and 6,997.56 is: 9,657.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.64 : 15,153.90 = 6,997.56 : x
  2. Step 2: Convert to fraction form
    10,979.64/15,153.90 = 6,997.56/x
  3. Step 3: Cross multiply
    10,979.64x = 15,153.90 × 6,997.56
  4. Step 4: Simplify right side
    10,979.64x = 106,040,324.48
  5. Step 5: Solve for x
    x = 106,040,324.48/10,979.64
  6. Step 6: Final answer
    x = 9,657.91

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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.