Home / 18,234.20-25,099.98-15,724.64

Finding the Fourth Proportional to 18,234.20, 25,099.98 and 15,724.64

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Solution

The fourth proportional to 18,234.20, 25,099.98 and 15,724.64 is: 21,645.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,234.20 : 25,099.98 = 15,724.64 : x
  2. Step 2: Convert to fraction form
    18,234.20/25,099.98 = 15,724.64/x
  3. Step 3: Cross multiply
    18,234.20x = 25,099.98 × 15,724.64
  4. Step 4: Simplify right side
    18,234.20x = 394,688,149.51
  5. Step 5: Solve for x
    x = 394,688,149.51/18,234.20
  6. Step 6: Final answer
    x = 21,645.49

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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.