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Finding the Fourth Proportional to 18,651, 27,972.20 and 5,323.74

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Solution

The fourth proportional to 18,651, 27,972.20 and 5,323.74 is: 7,984.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651 : 27,972.20 = 5,323.74 : x
  2. Step 2: Convert to fraction form
    18,651/27,972.20 = 5,323.74/x
  3. Step 3: Cross multiply
    18,651x = 27,972.20 × 5,323.74
  4. Step 4: Simplify right side
    18,651x = 148,916,720.03
  5. Step 5: Solve for x
    x = 148,916,720.03/18,651
  6. Step 6: Final answer
    x = 7,984.38

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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.