Home / 30,309.60-45,464.40-9,249.75

Finding the Fourth Proportional to 30,309.60, 45,464.40 and 9,249.75

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Solution

The fourth proportional to 30,309.60, 45,464.40 and 9,249.75 is: 13,874.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,309.60 : 45,464.40 = 9,249.75 : x
  2. Step 2: Convert to fraction form
    30,309.60/45,464.40 = 9,249.75/x
  3. Step 3: Cross multiply
    30,309.60x = 45,464.40 × 9,249.75
  4. Step 4: Simplify right side
    30,309.60x = 420,534,333.90
  5. Step 5: Solve for x
    x = 420,534,333.90/30,309.60
  6. Step 6: Final answer
    x = 13,874.63

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Double scale
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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.