Home / 12,028.32-18,015.12-8,313.72

Finding the Fourth Proportional to 12,028.32, 18,015.12 and 8,313.72

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Solution

The fourth proportional to 12,028.32, 18,015.12 and 8,313.72 is: 12,451.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,028.32 : 18,015.12 = 8,313.72 : x
  2. Step 2: Convert to fraction form
    12,028.32/18,015.12 = 8,313.72/x
  3. Step 3: Cross multiply
    12,028.32x = 18,015.12 × 8,313.72
  4. Step 4: Simplify right side
    12,028.32x = 149,772,663.45
  5. Step 5: Solve for x
    x = 149,772,663.45/12,028.32
  6. Step 6: Final answer
    x = 12,451.67

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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.