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Finding the Fourth Proportional to 18,932.16, 28,375.01 and 9,448.79

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Solution

The fourth proportional to 18,932.16, 28,375.01 and 9,448.79 is: 14,161.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,932.16 : 28,375.01 = 9,448.79 : x
  2. Step 2: Convert to fraction form
    18,932.16/28,375.01 = 9,448.79/x
  3. Step 3: Cross multiply
    18,932.16x = 28,375.01 × 9,448.79
  4. Step 4: Simplify right side
    18,932.16x = 268,109,357.05
  5. Step 5: Solve for x
    x = 268,109,357.05/18,932.16
  6. Step 6: Final answer
    x = 14,161.58

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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.