Home / 12,015.45-18,023.17-8,749.32

Finding the Fourth Proportional to 12,015.45, 18,023.17 and 8,749.32

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Solution

The fourth proportional to 12,015.45, 18,023.17 and 8,749.32 is: 13,123.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.45 : 18,023.17 = 8,749.32 : x
  2. Step 2: Convert to fraction form
    12,015.45/18,023.17 = 8,749.32/x
  3. Step 3: Cross multiply
    12,015.45x = 18,023.17 × 8,749.32
  4. Step 4: Simplify right side
    12,015.45x = 157,690,459.87
  5. Step 5: Solve for x
    x = 157,690,459.87/12,015.45
  6. Step 6: Final answer
    x = 13,123.97

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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.