Home / 20,759.19-28,647.51-11,806.68

Finding the Fourth Proportional to 20,759.19, 28,647.51 and 11,806.68

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Solution

The fourth proportional to 20,759.19, 28,647.51 and 11,806.68 is: 16,293.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.19 : 28,647.51 = 11,806.68 : x
  2. Step 2: Convert to fraction form
    20,759.19/28,647.51 = 11,806.68/x
  3. Step 3: Cross multiply
    20,759.19x = 28,647.51 × 11,806.68
  4. Step 4: Simplify right side
    20,759.19x = 338,231,983.37
  5. Step 5: Solve for x
    x = 338,231,983.37/20,759.19
  6. Step 6: Final answer
    x = 16,293.12

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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.