Home / 20,020.13-30,030.18-8,179.49

Finding the Fourth Proportional to 20,020.13, 30,030.18 and 8,179.49

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Solution

The fourth proportional to 20,020.13, 30,030.18 and 8,179.49 is: 12,269.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020.13 : 30,030.18 = 8,179.49 : x
  2. Step 2: Convert to fraction form
    20,020.13/30,030.18 = 8,179.49/x
  3. Step 3: Cross multiply
    20,020.13x = 30,030.18 × 8,179.49
  4. Step 4: Simplify right side
    20,020.13x = 245,631,406.86
  5. Step 5: Solve for x
    x = 245,631,406.86/20,020.13
  6. Step 6: Final answer
    x = 12,269.22

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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.