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Finding the Fourth Proportional to 18,668.84, 27,975.12 and 11,265.08

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Solution

The fourth proportional to 18,668.84, 27,975.12 and 11,265.08 is: 16,880.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.84 : 27,975.12 = 11,265.08 : x
  2. Step 2: Convert to fraction form
    18,668.84/27,975.12 = 11,265.08/x
  3. Step 3: Cross multiply
    18,668.84x = 27,975.12 × 11,265.08
  4. Step 4: Simplify right side
    18,668.84x = 315,141,964.81
  5. Step 5: Solve for x
    x = 315,141,964.81/18,668.84
  6. Step 6: Final answer
    x = 16,880.64

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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.