Home / 20,969.25-28,937.77-11,538.02

Finding the Fourth Proportional to 20,969.25, 28,937.77 and 11,538.02

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Solution

The fourth proportional to 20,969.25, 28,937.77 and 11,538.02 is: 15,922.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969.25 : 28,937.77 = 11,538.02 : x
  2. Step 2: Convert to fraction form
    20,969.25/28,937.77 = 11,538.02/x
  3. Step 3: Cross multiply
    20,969.25x = 28,937.77 × 11,538.02
  4. Step 4: Simplify right side
    20,969.25x = 333,884,395.48
  5. Step 5: Solve for x
    x = 333,884,395.48/20,969.25
  6. Step 6: Final answer
    x = 15,922.57

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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.