Home / 20,021.05-27,620.49-11,521.18

Finding the Fourth Proportional to 20,021.05, 27,620.49 and 11,521.18

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Solution

The fourth proportional to 20,021.05, 27,620.49 and 11,521.18 is: 15,894.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.05 : 27,620.49 = 11,521.18 : x
  2. Step 2: Convert to fraction form
    20,021.05/27,620.49 = 11,521.18/x
  3. Step 3: Cross multiply
    20,021.05x = 27,620.49 × 11,521.18
  4. Step 4: Simplify right side
    20,021.05x = 318,220,636.98
  5. Step 5: Solve for x
    x = 318,220,636.98/20,021.05
  6. Step 6: Final answer
    x = 15,894.30

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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.