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Finding the Fourth Proportional to 18,618.89, 27,924.81 and 9,724.63

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Solution

The fourth proportional to 18,618.89, 27,924.81 and 9,724.63 is: 14,585.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.89 : 27,924.81 = 9,724.63 : x
  2. Step 2: Convert to fraction form
    18,618.89/27,924.81 = 9,724.63/x
  3. Step 3: Cross multiply
    18,618.89x = 27,924.81 × 9,724.63
  4. Step 4: Simplify right side
    18,618.89x = 271,558,338.79
  5. Step 5: Solve for x
    x = 271,558,338.79/18,618.89
  6. Step 6: Final answer
    x = 14,585.10

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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.