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Finding the Fourth Proportional to 18,452, 27,678.24 and 6,140

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Solution

The fourth proportional to 18,452, 27,678.24 and 6,140 is: 9,210.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,452 : 27,678.24 = 6,140 : x
  2. Step 2: Convert to fraction form
    18,452/27,678.24 = 6,140/x
  3. Step 3: Cross multiply
    18,452x = 27,678.24 × 6,140
  4. Step 4: Simplify right side
    18,452x = 169,944,393.60
  5. Step 5: Solve for x
    x = 169,944,393.60/18,452
  6. Step 6: Final answer
    x = 9,210.08

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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.