Home / 12,190.20-18,287.52-4,798.20

Finding the Fourth Proportional to 12,190.20, 18,287.52 and 4,798.20

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Solution

The fourth proportional to 12,190.20, 18,287.52 and 4,798.20 is: 7,198.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.20 : 18,287.52 = 4,798.20 : x
  2. Step 2: Convert to fraction form
    12,190.20/18,287.52 = 4,798.20/x
  3. Step 3: Cross multiply
    12,190.20x = 18,287.52 × 4,798.20
  4. Step 4: Simplify right side
    12,190.20x = 87,747,178.46
  5. Step 5: Solve for x
    x = 87,747,178.46/12,190.20
  6. Step 6: Final answer
    x = 7,198.17

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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.