Home / 13,928.88-19,221.84-7,641.12

Finding the Fourth Proportional to 13,928.88, 19,221.84 and 7,641.12

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Solution

The fourth proportional to 13,928.88, 19,221.84 and 7,641.12 is: 10,544.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.88 : 19,221.84 = 7,641.12 : x
  2. Step 2: Convert to fraction form
    13,928.88/19,221.84 = 7,641.12/x
  3. Step 3: Cross multiply
    13,928.88x = 19,221.84 × 7,641.12
  4. Step 4: Simplify right side
    13,928.88x = 146,876,386.06
  5. Step 5: Solve for x
    x = 146,876,386.06/13,928.88
  6. Step 6: Final answer
    x = 10,544.74

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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.