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Finding the Fourth Proportional to 18,118.96, 27,181.01 and 5,640.25

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Solution

The fourth proportional to 18,118.96, 27,181.01 and 5,640.25 is: 8,461.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.96 : 27,181.01 = 5,640.25 : x
  2. Step 2: Convert to fraction form
    18,118.96/27,181.01 = 5,640.25/x
  3. Step 3: Cross multiply
    18,118.96x = 27,181.01 × 5,640.25
  4. Step 4: Simplify right side
    18,118.96x = 153,307,561.52
  5. Step 5: Solve for x
    x = 153,307,561.52/18,118.96
  6. Step 6: Final answer
    x = 8,461.17

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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.