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Finding the Fourth Proportional to 18,323.75, 27,486.74 and 5,177.12

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Solution

The fourth proportional to 18,323.75, 27,486.74 and 5,177.12 is: 7,765.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,323.75 : 27,486.74 = 5,177.12 : x
  2. Step 2: Convert to fraction form
    18,323.75/27,486.74 = 5,177.12/x
  3. Step 3: Cross multiply
    18,323.75x = 27,486.74 × 5,177.12
  4. Step 4: Simplify right side
    18,323.75x = 142,302,026.90
  5. Step 5: Solve for x
    x = 142,302,026.90/18,323.75
  6. Step 6: Final answer
    x = 7,765.99

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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.