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Finding the Fourth Proportional to 18,652.63, 27,978.95 and 6,169.30

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Solution

The fourth proportional to 18,652.63, 27,978.95 and 6,169.30 is: 9,253.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,652.63 : 27,978.95 = 6,169.30 : x
  2. Step 2: Convert to fraction form
    18,652.63/27,978.95 = 6,169.30/x
  3. Step 3: Cross multiply
    18,652.63x = 27,978.95 × 6,169.30
  4. Step 4: Simplify right side
    18,652.63x = 172,610,435.44
  5. Step 5: Solve for x
    x = 172,610,435.44/18,652.63
  6. Step 6: Final answer
    x = 9,253.95

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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.