Home / 20,578.88-30,868.40-5,789.44

Finding the Fourth Proportional to 20,578.88, 30,868.40 and 5,789.44

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Solution

The fourth proportional to 20,578.88, 30,868.40 and 5,789.44 is: 8,684.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578.88 : 30,868.40 = 5,789.44 : x
  2. Step 2: Convert to fraction form
    20,578.88/30,868.40 = 5,789.44/x
  3. Step 3: Cross multiply
    20,578.88x = 30,868.40 × 5,789.44
  4. Step 4: Simplify right side
    20,578.88x = 178,710,749.70
  5. Step 5: Solve for x
    x = 178,710,749.70/20,578.88
  6. Step 6: Final answer
    x = 8,684.18

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.