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Finding the Fourth Proportional to 18,521.40, 27,774 and 5,373.48

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Solution

The fourth proportional to 18,521.40, 27,774 and 5,373.48 is: 8,057.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521.40 : 27,774 = 5,373.48 : x
  2. Step 2: Convert to fraction form
    18,521.40/27,774 = 5,373.48/x
  3. Step 3: Cross multiply
    18,521.40x = 27,774 × 5,373.48
  4. Step 4: Simplify right side
    18,521.40x = 149,243,033.52
  5. Step 5: Solve for x
    x = 149,243,033.52/18,521.40
  6. Step 6: Final answer
    x = 8,057.87

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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.