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Finding the Fourth Proportional to 18,000, 27,000 and 5,688

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Solution

The fourth proportional to 18,000, 27,000 and 5,688 is: 8,532

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,000 : 27,000 = 5,688 : x
  2. Step 2: Convert to fraction form
    18,000/27,000 = 5,688/x
  3. Step 3: Cross multiply
    18,000x = 27,000 × 5,688
  4. Step 4: Simplify right side
    18,000x = 153,576,000
  5. Step 5: Solve for x
    x = 153,576,000/18,000
  6. Step 6: Final answer
    x = 8,532

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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.