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Finding the Fourth Proportional to 18,486.87, 27,735.17 and 6,641.84

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Solution

The fourth proportional to 18,486.87, 27,735.17 and 6,641.84 is: 9,964.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.87 : 27,735.17 = 6,641.84 : x
  2. Step 2: Convert to fraction form
    18,486.87/27,735.17 = 6,641.84/x
  3. Step 3: Cross multiply
    18,486.87x = 27,735.17 × 6,641.84
  4. Step 4: Simplify right side
    18,486.87x = 184,212,389.63
  5. Step 5: Solve for x
    x = 184,212,389.63/18,486.87
  6. Step 6: Final answer
    x = 9,964.50

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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.