Home / 12,910.05-19,365.09-4,145.67

Finding the Fourth Proportional to 12,910.05, 19,365.09 and 4,145.67

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Solution

The fourth proportional to 12,910.05, 19,365.09 and 4,145.67 is: 6,218.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910.05 : 19,365.09 = 4,145.67 : x
  2. Step 2: Convert to fraction form
    12,910.05/19,365.09 = 4,145.67/x
  3. Step 3: Cross multiply
    12,910.05x = 19,365.09 × 4,145.67
  4. Step 4: Simplify right side
    12,910.05x = 80,281,272.66
  5. Step 5: Solve for x
    x = 80,281,272.66/12,910.05
  6. Step 6: Final answer
    x = 6,218.51

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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.