Home / 20,669.59-28,523.04-11,238.15

Finding the Fourth Proportional to 20,669.59, 28,523.04 and 11,238.15

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Solution

The fourth proportional to 20,669.59, 28,523.04 and 11,238.15 is: 15,508.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.59 : 28,523.04 = 11,238.15 : x
  2. Step 2: Convert to fraction form
    20,669.59/28,523.04 = 11,238.15/x
  3. Step 3: Cross multiply
    20,669.59x = 28,523.04 × 11,238.15
  4. Step 4: Simplify right side
    20,669.59x = 320,546,201.98
  5. Step 5: Solve for x
    x = 320,546,201.98/20,669.59
  6. Step 6: Final answer
    x = 15,508.11

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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.