Home / 18,261.54-27,391.68-7,728.66

Finding the Fourth Proportional to 18,261.54, 27,391.68 and 7,728.66

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Solution

The fourth proportional to 18,261.54, 27,391.68 and 7,728.66 is: 11,592.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,261.54 : 27,391.68 = 7,728.66 : x
  2. Step 2: Convert to fraction form
    18,261.54/27,391.68 = 7,728.66/x
  3. Step 3: Cross multiply
    18,261.54x = 27,391.68 × 7,728.66
  4. Step 4: Simplify right side
    18,261.54x = 211,700,981.55
  5. Step 5: Solve for x
    x = 211,700,981.55/18,261.54
  6. Step 6: Final answer
    x = 11,592.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.