Home / 13,660.11-18,850.66-7,691.65

Finding the Fourth Proportional to 13,660.11, 18,850.66 and 7,691.65

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Solution

The fourth proportional to 13,660.11, 18,850.66 and 7,691.65 is: 10,614.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.11 : 18,850.66 = 7,691.65 : x
  2. Step 2: Convert to fraction form
    13,660.11/18,850.66 = 7,691.65/x
  3. Step 3: Cross multiply
    13,660.11x = 18,850.66 × 7,691.65
  4. Step 4: Simplify right side
    13,660.11x = 144,992,612.63
  5. Step 5: Solve for x
    x = 144,992,612.63/13,660.11
  6. Step 6: Final answer
    x = 10,614.31

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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.