Home / 9,919.25-13,688.66-5,443.09

Finding the Fourth Proportional to 9,919.25, 13,688.66 and 5,443.09

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Solution

The fourth proportional to 9,919.25, 13,688.66 and 5,443.09 is: 7,511.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.25 : 13,688.66 = 5,443.09 : x
  2. Step 2: Convert to fraction form
    9,919.25/13,688.66 = 5,443.09/x
  3. Step 3: Cross multiply
    9,919.25x = 13,688.66 × 5,443.09
  4. Step 4: Simplify right side
    9,919.25x = 74,508,608.36
  5. Step 5: Solve for x
    x = 74,508,608.36/9,919.25
  6. Step 6: Final answer
    x = 7,511.52

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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.