Home / 9,919.44-13,688.84-5,727.69

Finding the Fourth Proportional to 9,919.44, 13,688.84 and 5,727.69

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Solution

The fourth proportional to 9,919.44, 13,688.84 and 5,727.69 is: 7,904.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.44 : 13,688.84 = 5,727.69 : x
  2. Step 2: Convert to fraction form
    9,919.44/13,688.84 = 5,727.69/x
  3. Step 3: Cross multiply
    9,919.44x = 13,688.84 × 5,727.69
  4. Step 4: Simplify right side
    9,919.44x = 78,405,431.98
  5. Step 5: Solve for x
    x = 78,405,431.98/9,919.44
  6. Step 6: Final answer
    x = 7,904.22

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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.