Home / 20,003.76-30,018.90-8,316.96

Finding the Fourth Proportional to 20,003.76, 30,018.90 and 8,316.96

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Solution

The fourth proportional to 20,003.76, 30,018.90 and 8,316.96 is: 12,480.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,003.76 : 30,018.90 = 8,316.96 : x
  2. Step 2: Convert to fraction form
    20,003.76/30,018.90 = 8,316.96/x
  3. Step 3: Cross multiply
    20,003.76x = 30,018.90 × 8,316.96
  4. Step 4: Simplify right side
    20,003.76x = 249,665,990.54
  5. Step 5: Solve for x
    x = 249,665,990.54/20,003.76
  6. Step 6: Final answer
    x = 12,480.95

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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.