Home / 20,146.05-30,219.07-7,663.19

Finding the Fourth Proportional to 20,146.05, 30,219.07 and 7,663.19

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Solution

The fourth proportional to 20,146.05, 30,219.07 and 7,663.19 is: 11,494.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146.05 : 30,219.07 = 7,663.19 : x
  2. Step 2: Convert to fraction form
    20,146.05/30,219.07 = 7,663.19/x
  3. Step 3: Cross multiply
    20,146.05x = 30,219.07 × 7,663.19
  4. Step 4: Simplify right side
    20,146.05x = 231,574,531.42
  5. Step 5: Solve for x
    x = 231,574,531.42/20,146.05
  6. Step 6: Final answer
    x = 11,494.79

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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.