Home / 20,667.26-28,521.24-11,236.43

Finding the Fourth Proportional to 20,667.26, 28,521.24 and 11,236.43

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Solution

The fourth proportional to 20,667.26, 28,521.24 and 11,236.43 is: 15,506.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.26 : 28,521.24 = 11,236.43 : x
  2. Step 2: Convert to fraction form
    20,667.26/28,521.24 = 11,236.43/x
  3. Step 3: Cross multiply
    20,667.26x = 28,521.24 × 11,236.43
  4. Step 4: Simplify right side
    20,667.26x = 320,476,916.77
  5. Step 5: Solve for x
    x = 320,476,916.77/20,667.26
  6. Step 6: Final answer
    x = 15,506.50

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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.