Home / 22,217.42-30,640.21-18,434.60

Finding the Fourth Proportional to 22,217.42, 30,640.21 and 18,434.60

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Solution

The fourth proportional to 22,217.42, 30,640.21 and 18,434.60 is: 25,423.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,217.42 : 30,640.21 = 18,434.60 : x
  2. Step 2: Convert to fraction form
    22,217.42/30,640.21 = 18,434.60/x
  3. Step 3: Cross multiply
    22,217.42x = 30,640.21 × 18,434.60
  4. Step 4: Simplify right side
    22,217.42x = 564,840,015.27
  5. Step 5: Solve for x
    x = 564,840,015.27/22,217.42
  6. Step 6: Final answer
    x = 25,423.29

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.