Home / 13,906.28-19,191.16-7,618.66

Finding the Fourth Proportional to 13,906.28, 19,191.16 and 7,618.66

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Solution

The fourth proportional to 13,906.28, 19,191.16 and 7,618.66 is: 10,514.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906.28 : 19,191.16 = 7,618.66 : x
  2. Step 2: Convert to fraction form
    13,906.28/19,191.16 = 7,618.66/x
  3. Step 3: Cross multiply
    13,906.28x = 19,191.16 × 7,618.66
  4. Step 4: Simplify right side
    13,906.28x = 146,210,884.59
  5. Step 5: Solve for x
    x = 146,210,884.59/13,906.28
  6. Step 6: Final answer
    x = 10,514.02

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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.