Home / 12,209.20-18,311.40-4,001.20

Finding the Fourth Proportional to 12,209.20, 18,311.40 and 4,001.20

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Solution

The fourth proportional to 12,209.20, 18,311.40 and 4,001.20 is: 6,001.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.20 : 18,311.40 = 4,001.20 : x
  2. Step 2: Convert to fraction form
    12,209.20/18,311.40 = 4,001.20/x
  3. Step 3: Cross multiply
    12,209.20x = 18,311.40 × 4,001.20
  4. Step 4: Simplify right side
    12,209.20x = 73,267,573.68
  5. Step 5: Solve for x
    x = 73,267,573.68/12,209.20
  6. Step 6: Final answer
    x = 6,001.01

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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.