Home / 13,979.68-19,278.66-9,191.14

Finding the Fourth Proportional to 13,979.68, 19,278.66 and 9,191.14

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Solution

The fourth proportional to 13,979.68, 19,278.66 and 9,191.14 is: 12,675.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.68 : 19,278.66 = 9,191.14 : x
  2. Step 2: Convert to fraction form
    13,979.68/19,278.66 = 9,191.14/x
  3. Step 3: Cross multiply
    13,979.68x = 19,278.66 × 9,191.14
  4. Step 4: Simplify right side
    13,979.68x = 177,192,863.07
  5. Step 5: Solve for x
    x = 177,192,863.07/13,979.68
  6. Step 6: Final answer
    x = 12,675.03

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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.