Home / 13,663.25-18,855.33-7,921.83

Finding the Fourth Proportional to 13,663.25, 18,855.33 and 7,921.83

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Solution

The fourth proportional to 13,663.25, 18,855.33 and 7,921.83 is: 10,932.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.25 : 18,855.33 = 7,921.83 : x
  2. Step 2: Convert to fraction form
    13,663.25/18,855.33 = 7,921.83/x
  3. Step 3: Cross multiply
    13,663.25x = 18,855.33 × 7,921.83
  4. Step 4: Simplify right side
    13,663.25x = 149,368,718.85
  5. Step 5: Solve for x
    x = 149,368,718.85/13,663.25
  6. Step 6: Final answer
    x = 10,932.15

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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.