Home / 20,928.07-28,881.26-11,367.96

Finding the Fourth Proportional to 20,928.07, 28,881.26 and 11,367.96

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Solution

The fourth proportional to 20,928.07, 28,881.26 and 11,367.96 is: 15,688.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.07 : 28,881.26 = 11,367.96 : x
  2. Step 2: Convert to fraction form
    20,928.07/28,881.26 = 11,367.96/x
  3. Step 3: Cross multiply
    20,928.07x = 28,881.26 × 11,367.96
  4. Step 4: Simplify right side
    20,928.07x = 328,320,969.24
  5. Step 5: Solve for x
    x = 328,320,969.24/20,928.07
  6. Step 6: Final answer
    x = 15,688.06

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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.