Home / 18,217.89-25,255.34-17,220.07

Finding the Fourth Proportional to 18,217.89, 25,255.34 and 17,220.07

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Solution

The fourth proportional to 18,217.89, 25,255.34 and 17,220.07 is: 23,872.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.89 : 25,255.34 = 17,220.07 : x
  2. Step 2: Convert to fraction form
    18,217.89/25,255.34 = 17,220.07/x
  3. Step 3: Cross multiply
    18,217.89x = 25,255.34 × 17,220.07
  4. Step 4: Simplify right side
    18,217.89x = 434,898,722.67
  5. Step 5: Solve for x
    x = 434,898,722.67/18,217.89
  6. Step 6: Final answer
    x = 23,872.07

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.