Home / 19,975.91-29,982.38-10,122.05

Finding the Fourth Proportional to 19,975.91, 29,982.38 and 10,122.05

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Solution

The fourth proportional to 19,975.91, 29,982.38 and 10,122.05 is: 15,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,975.91 : 29,982.38 = 10,122.05 : x
  2. Step 2: Convert to fraction form
    19,975.91/29,982.38 = 10,122.05/x
  3. Step 3: Cross multiply
    19,975.91x = 29,982.38 × 10,122.05
  4. Step 4: Simplify right side
    19,975.91x = 303,482,948.96
  5. Step 5: Solve for x
    x = 303,482,948.96/19,975.91
  6. Step 6: Final answer
    x = 15,192.45

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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.