Home / 20,190.18-30,286.74-5,398.74

Finding the Fourth Proportional to 20,190.18, 30,286.74 and 5,398.74

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Solution

The fourth proportional to 20,190.18, 30,286.74 and 5,398.74 is: 8,098.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.18 : 30,286.74 = 5,398.74 : x
  2. Step 2: Convert to fraction form
    20,190.18/30,286.74 = 5,398.74/x
  3. Step 3: Cross multiply
    20,190.18x = 30,286.74 × 5,398.74
  4. Step 4: Simplify right side
    20,190.18x = 163,510,234.71
  5. Step 5: Solve for x
    x = 163,510,234.71/20,190.18
  6. Step 6: Final answer
    x = 8,098.50

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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.