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Finding the Fourth Proportional to 18,100.65, 24,979.89 and 10,145.44

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Solution

The fourth proportional to 18,100.65, 24,979.89 and 10,145.44 is: 14,001.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,100.65 : 24,979.89 = 10,145.44 : x
  2. Step 2: Convert to fraction form
    18,100.65/24,979.89 = 10,145.44/x
  3. Step 3: Cross multiply
    18,100.65x = 24,979.89 × 10,145.44
  4. Step 4: Simplify right side
    18,100.65x = 253,431,975.20
  5. Step 5: Solve for x
    x = 253,431,975.20/18,100.65
  6. Step 6: Final answer
    x = 14,001.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.