Home / 20,214.30-30,321.45-18,464.70

Finding the Fourth Proportional to 20,214.30, 30,321.45 and 18,464.70

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Solution

The fourth proportional to 20,214.30, 30,321.45 and 18,464.70 is: 27,697.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,214.30 : 30,321.45 = 18,464.70 : x
  2. Step 2: Convert to fraction form
    20,214.30/30,321.45 = 18,464.70/x
  3. Step 3: Cross multiply
    20,214.30x = 30,321.45 × 18,464.70
  4. Step 4: Simplify right side
    20,214.30x = 559,876,477.82
  5. Step 5: Solve for x
    x = 559,876,477.82/20,214.30
  6. Step 6: Final answer
    x = 27,697.05

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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.