Home / 20,191.05-30,266.19-10,165.14

Finding the Fourth Proportional to 20,191.05, 30,266.19 and 10,165.14

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Solution

The fourth proportional to 20,191.05, 30,266.19 and 10,165.14 is: 15,237.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.05 : 30,266.19 = 10,165.14 : x
  2. Step 2: Convert to fraction form
    20,191.05/30,266.19 = 10,165.14/x
  3. Step 3: Cross multiply
    20,191.05x = 30,266.19 × 10,165.14
  4. Step 4: Simplify right side
    20,191.05x = 307,660,058.62
  5. Step 5: Solve for x
    x = 307,660,058.62/20,191.05
  6. Step 6: Final answer
    x = 15,237.45

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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.