Home / 20,937.36-28,893.23-11,505.72

Finding the Fourth Proportional to 20,937.36, 28,893.23 and 11,505.72

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Solution

The fourth proportional to 20,937.36, 28,893.23 and 11,505.72 is: 15,877.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.36 : 28,893.23 = 11,505.72 : x
  2. Step 2: Convert to fraction form
    20,937.36/28,893.23 = 11,505.72/x
  3. Step 3: Cross multiply
    20,937.36x = 28,893.23 × 11,505.72
  4. Step 4: Simplify right side
    20,937.36x = 332,437,414.28
  5. Step 5: Solve for x
    x = 332,437,414.28/20,937.36
  6. Step 6: Final answer
    x = 15,877.71

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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.