Home / 21,540.13-32,310.19-12,770.26

Finding the Fourth Proportional to 21,540.13, 32,310.19 and 12,770.26

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Solution

The fourth proportional to 21,540.13, 32,310.19 and 12,770.26 is: 19,155.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.13 : 32,310.19 = 12,770.26 : x
  2. Step 2: Convert to fraction form
    21,540.13/32,310.19 = 12,770.26/x
  3. Step 3: Cross multiply
    21,540.13x = 32,310.19 × 12,770.26
  4. Step 4: Simplify right side
    21,540.13x = 412,609,462.14
  5. Step 5: Solve for x
    x = 412,609,462.14/21,540.13
  6. Step 6: Final answer
    x = 19,155.39

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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.