Home / 18,668.38-27,991.56-8,812.30

Finding the Fourth Proportional to 18,668.38, 27,991.56 and 8,812.30

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Solution

The fourth proportional to 18,668.38, 27,991.56 and 8,812.30 is: 13,213.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.38 : 27,991.56 = 8,812.30 : x
  2. Step 2: Convert to fraction form
    18,668.38/27,991.56 = 8,812.30/x
  3. Step 3: Cross multiply
    18,668.38x = 27,991.56 × 8,812.30
  4. Step 4: Simplify right side
    18,668.38x = 246,670,024.19
  5. Step 5: Solve for x
    x = 246,670,024.19/18,668.38
  6. Step 6: Final answer
    x = 13,213.25

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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.