Home / 20,669.70-28,523.40-11,238.27

Finding the Fourth Proportional to 20,669.70, 28,523.40 and 11,238.27

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Solution

The fourth proportional to 20,669.70, 28,523.40 and 11,238.27 is: 15,508.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.70 : 28,523.40 = 11,238.27 : x
  2. Step 2: Convert to fraction form
    20,669.70/28,523.40 = 11,238.27/x
  3. Step 3: Cross multiply
    20,669.70x = 28,523.40 × 11,238.27
  4. Step 4: Simplify right side
    20,669.70x = 320,553,670.52
  5. Step 5: Solve for x
    x = 320,553,670.52/20,669.70
  6. Step 6: Final answer
    x = 15,508.39

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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.