Home / 20,657.58-28,507.48-11,226.12

Finding the Fourth Proportional to 20,657.58, 28,507.48 and 11,226.12

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Solution

The fourth proportional to 20,657.58, 28,507.48 and 11,226.12 is: 15,492.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.58 : 28,507.48 = 11,226.12 : x
  2. Step 2: Convert to fraction form
    20,657.58/28,507.48 = 11,226.12/x
  3. Step 3: Cross multiply
    20,657.58x = 28,507.48 × 11,226.12
  4. Step 4: Simplify right side
    20,657.58x = 320,028,391.38
  5. Step 5: Solve for x
    x = 320,028,391.38/20,657.58
  6. Step 6: Final answer
    x = 15,492.06

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Half scale
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Double scale
Find fourth proportional to 20,658.58, 28,508.86 and 11,227.12
Similar ratio
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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.