Home / 20,691.94-28,554.60-11,260.48

Finding the Fourth Proportional to 20,691.94, 28,554.60 and 11,260.48

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Solution

The fourth proportional to 20,691.94, 28,554.60 and 11,260.48 is: 15,539.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.94 : 28,554.60 = 11,260.48 : x
  2. Step 2: Convert to fraction form
    20,691.94/28,554.60 = 11,260.48/x
  3. Step 3: Cross multiply
    20,691.94x = 28,554.60 × 11,260.48
  4. Step 4: Simplify right side
    20,691.94x = 321,538,502.21
  5. Step 5: Solve for x
    x = 321,538,502.21/20,691.94
  6. Step 6: Final answer
    x = 15,539.31

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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.