Home / 20,667.84-28,521.90-11,236.38

Finding the Fourth Proportional to 20,667.84, 28,521.90 and 11,236.38

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Solution

The fourth proportional to 20,667.84, 28,521.90 and 11,236.38 is: 15,506.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.84 : 28,521.90 = 11,236.38 : x
  2. Step 2: Convert to fraction form
    20,667.84/28,521.90 = 11,236.38/x
  3. Step 3: Cross multiply
    20,667.84x = 28,521.90 × 11,236.38
  4. Step 4: Simplify right side
    20,667.84x = 320,482,906.72
  5. Step 5: Solve for x
    x = 320,482,906.72/20,667.84
  6. Step 6: Final answer
    x = 15,506.36

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Half scale
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Double scale
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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.