Home / 20,713.46-28,583.55-11,759.78

Finding the Fourth Proportional to 20,713.46, 28,583.55 and 11,759.78

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Solution

The fourth proportional to 20,713.46, 28,583.55 and 11,759.78 is: 16,227.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.46 : 28,583.55 = 11,759.78 : x
  2. Step 2: Convert to fraction form
    20,713.46/28,583.55 = 11,759.78/x
  3. Step 3: Cross multiply
    20,713.46x = 28,583.55 × 11,759.78
  4. Step 4: Simplify right side
    20,713.46x = 336,136,331.08
  5. Step 5: Solve for x
    x = 336,136,331.08/20,713.46
  6. Step 6: Final answer
    x = 16,227.92

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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.