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Finding the Fourth Proportional to 18,077.18, 27,110.90 and 6,388.88

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Solution

The fourth proportional to 18,077.18, 27,110.90 and 6,388.88 is: 9,581.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,077.18 : 27,110.90 = 6,388.88 : x
  2. Step 2: Convert to fraction form
    18,077.18/27,110.90 = 6,388.88/x
  3. Step 3: Cross multiply
    18,077.18x = 27,110.90 × 6,388.88
  4. Step 4: Simplify right side
    18,077.18x = 173,208,167.21
  5. Step 5: Solve for x
    x = 173,208,167.21/18,077.18
  6. Step 6: Final answer
    x = 9,581.59

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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.