Home / 12,013.28-18,027.90-4,222.10

Finding the Fourth Proportional to 12,013.28, 18,027.90 and 4,222.10

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Solution

The fourth proportional to 12,013.28, 18,027.90 and 4,222.10 is: 6,335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,013.28 : 18,027.90 = 4,222.10 : x
  2. Step 2: Convert to fraction form
    12,013.28/18,027.90 = 4,222.10/x
  3. Step 3: Cross multiply
    12,013.28x = 18,027.90 × 4,222.10
  4. Step 4: Simplify right side
    12,013.28x = 76,115,596.59
  5. Step 5: Solve for x
    x = 76,115,596.59/12,013.28
  6. Step 6: Final answer
    x = 6,335.95

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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.