Home / 13,740.38-18,961.62-7,773.22

Finding the Fourth Proportional to 13,740.38, 18,961.62 and 7,773.22

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Solution

The fourth proportional to 13,740.38, 18,961.62 and 7,773.22 is: 10,726.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.38 : 18,961.62 = 7,773.22 : x
  2. Step 2: Convert to fraction form
    13,740.38/18,961.62 = 7,773.22/x
  3. Step 3: Cross multiply
    13,740.38x = 18,961.62 × 7,773.22
  4. Step 4: Simplify right side
    13,740.38x = 147,392,843.82
  5. Step 5: Solve for x
    x = 147,392,843.82/13,740.38
  6. Step 6: Final answer
    x = 10,726.98

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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.