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Finding the Fourth Proportional to 18,508.19, 27,774.59 and 8,648.24

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Solution

The fourth proportional to 18,508.19, 27,774.59 and 8,648.24 is: 12,978.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,508.19 : 27,774.59 = 8,648.24 : x
  2. Step 2: Convert to fraction form
    18,508.19/27,774.59 = 8,648.24/x
  3. Step 3: Cross multiply
    18,508.19x = 27,774.59 × 8,648.24
  4. Step 4: Simplify right side
    18,508.19x = 240,201,276.98
  5. Step 5: Solve for x
    x = 240,201,276.98/18,508.19
  6. Step 6: Final answer
    x = 12,978.11

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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.