Home / 13,928.82-19,221.74-7,641.18

Finding the Fourth Proportional to 13,928.82, 19,221.74 and 7,641.18

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Solution

The fourth proportional to 13,928.82, 19,221.74 and 7,641.18 is: 10,544.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.82 : 19,221.74 = 7,641.18 : x
  2. Step 2: Convert to fraction form
    13,928.82/19,221.74 = 7,641.18/x
  3. Step 3: Cross multiply
    13,928.82x = 19,221.74 × 7,641.18
  4. Step 4: Simplify right side
    13,928.82x = 146,876,775.25
  5. Step 5: Solve for x
    x = 146,876,775.25/13,928.82
  6. Step 6: Final answer
    x = 10,544.81

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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.