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Finding the Fourth Proportional to 18,286.95, 27,424.99 and 7,756.82

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Solution

The fourth proportional to 18,286.95, 27,424.99 and 7,756.82 is: 11,632.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.95 : 27,424.99 = 7,756.82 : x
  2. Step 2: Convert to fraction form
    18,286.95/27,424.99 = 7,756.82/x
  3. Step 3: Cross multiply
    18,286.95x = 27,424.99 × 7,756.82
  4. Step 4: Simplify right side
    18,286.95x = 212,730,710.93
  5. Step 5: Solve for x
    x = 212,730,710.93/18,286.95
  6. Step 6: Final answer
    x = 11,632.92

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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.