Home / 20,428.23-30,651.03-11,544.78

Finding the Fourth Proportional to 20,428.23, 30,651.03 and 11,544.78

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Solution

The fourth proportional to 20,428.23, 30,651.03 and 11,544.78 is: 17,322.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.23 : 30,651.03 = 11,544.78 : x
  2. Step 2: Convert to fraction form
    20,428.23/30,651.03 = 11,544.78/x
  3. Step 3: Cross multiply
    20,428.23x = 30,651.03 × 11,544.78
  4. Step 4: Simplify right side
    20,428.23x = 353,859,398.12
  5. Step 5: Solve for x
    x = 353,859,398.12/20,428.23
  6. Step 6: Final answer
    x = 17,322.08

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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.