Home / 20,887.44-28,824.89-11,327.34

Finding the Fourth Proportional to 20,887.44, 28,824.89 and 11,327.34

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Solution

The fourth proportional to 20,887.44, 28,824.89 and 11,327.34 is: 15,631.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.44 : 28,824.89 = 11,327.34 : x
  2. Step 2: Convert to fraction form
    20,887.44/28,824.89 = 11,327.34/x
  3. Step 3: Cross multiply
    20,887.44x = 28,824.89 × 11,327.34
  4. Step 4: Simplify right side
    20,887.44x = 326,509,344.92
  5. Step 5: Solve for x
    x = 326,509,344.92/20,887.44
  6. Step 6: Final answer
    x = 15,631.85

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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.