Home / 12,156.35-18,236.45-5,230.91

Finding the Fourth Proportional to 12,156.35, 18,236.45 and 5,230.91

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Solution

The fourth proportional to 12,156.35, 18,236.45 and 5,230.91 is: 7,847.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.35 : 18,236.45 = 5,230.91 : x
  2. Step 2: Convert to fraction form
    12,156.35/18,236.45 = 5,230.91/x
  3. Step 3: Cross multiply
    12,156.35x = 18,236.45 × 5,230.91
  4. Step 4: Simplify right side
    12,156.35x = 95,393,202.51
  5. Step 5: Solve for x
    x = 95,393,202.51/12,156.35
  6. Step 6: Final answer
    x = 7,847.19

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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.