Home / 22,195.18-30,621.39-13,118.64

Finding the Fourth Proportional to 22,195.18, 30,621.39 and 13,118.64

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Solution

The fourth proportional to 22,195.18, 30,621.39 and 13,118.64 is: 18,099.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,195.18 : 30,621.39 = 13,118.64 : x
  2. Step 2: Convert to fraction form
    22,195.18/30,621.39 = 13,118.64/x
  3. Step 3: Cross multiply
    22,195.18x = 30,621.39 × 13,118.64
  4. Step 4: Simplify right side
    22,195.18x = 401,711,073.72
  5. Step 5: Solve for x
    x = 401,711,073.72/22,195.18
  6. Step 6: Final answer
    x = 18,099.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.