Home / 15,736.88-21,716.89-8,663.75

Finding the Fourth Proportional to 15,736.88, 21,716.89 and 8,663.75

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Solution

The fourth proportional to 15,736.88, 21,716.89 and 8,663.75 is: 11,955.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,736.88 : 21,716.89 = 8,663.75 : x
  2. Step 2: Convert to fraction form
    15,736.88/21,716.89 = 8,663.75/x
  3. Step 3: Cross multiply
    15,736.88x = 21,716.89 × 8,663.75
  4. Step 4: Simplify right side
    15,736.88x = 188,149,738.37
  5. Step 5: Solve for x
    x = 188,149,738.37/15,736.88
  6. Step 6: Final answer
    x = 11,955.98

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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.