Home / 9,919.28-13,687.44-5,885.48

Finding the Fourth Proportional to 9,919.28, 13,687.44 and 5,885.48

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Solution

The fourth proportional to 9,919.28, 13,687.44 and 5,885.48 is: 8,121.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.28 : 13,687.44 = 5,885.48 : x
  2. Step 2: Convert to fraction form
    9,919.28/13,687.44 = 5,885.48/x
  3. Step 3: Cross multiply
    9,919.28x = 13,687.44 × 5,885.48
  4. Step 4: Simplify right side
    9,919.28x = 80,557,154.37
  5. Step 5: Solve for x
    x = 80,557,154.37/9,919.28
  6. Step 6: Final answer
    x = 8,121.27

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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.