Home / 20,711.82-28,581.42-11,759.16

Finding the Fourth Proportional to 20,711.82, 28,581.42 and 11,759.16

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Solution

The fourth proportional to 20,711.82, 28,581.42 and 11,759.16 is: 16,227.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.82 : 28,581.42 = 11,759.16 : x
  2. Step 2: Convert to fraction form
    20,711.82/28,581.42 = 11,759.16/x
  3. Step 3: Cross multiply
    20,711.82x = 28,581.42 × 11,759.16
  4. Step 4: Simplify right side
    20,711.82x = 336,093,490.81
  5. Step 5: Solve for x
    x = 336,093,490.81/20,711.82
  6. Step 6: Final answer
    x = 16,227.13

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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.