Home / 15,733.94-21,713.12-8,660.60

Finding the Fourth Proportional to 15,733.94, 21,713.12 and 8,660.60

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Solution

The fourth proportional to 15,733.94, 21,713.12 and 8,660.60 is: 11,951.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,733.94 : 21,713.12 = 8,660.60 : x
  2. Step 2: Convert to fraction form
    15,733.94/21,713.12 = 8,660.60/x
  3. Step 3: Cross multiply
    15,733.94x = 21,713.12 × 8,660.60
  4. Step 4: Simplify right side
    15,733.94x = 188,048,647.07
  5. Step 5: Solve for x
    x = 188,048,647.07/15,733.94
  6. Step 6: Final answer
    x = 11,951.78

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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.