Home / 20,711.25-28,579.72-11,759.13

Finding the Fourth Proportional to 20,711.25, 28,579.72 and 11,759.13

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Solution

The fourth proportional to 20,711.25, 28,579.72 and 11,759.13 is: 16,226.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.25 : 28,579.72 = 11,759.13 : x
  2. Step 2: Convert to fraction form
    20,711.25/28,579.72 = 11,759.13/x
  3. Step 3: Cross multiply
    20,711.25x = 28,579.72 × 11,759.13
  4. Step 4: Simplify right side
    20,711.25x = 336,072,642.84
  5. Step 5: Solve for x
    x = 336,072,642.84/20,711.25
  6. Step 6: Final answer
    x = 16,226.57

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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.