Home / 12,164.20-18,246.30-8,247.40

Finding the Fourth Proportional to 12,164.20, 18,246.30 and 8,247.40

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Solution

The fourth proportional to 12,164.20, 18,246.30 and 8,247.40 is: 12,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,164.20 : 18,246.30 = 8,247.40 : x
  2. Step 2: Convert to fraction form
    12,164.20/18,246.30 = 8,247.40/x
  3. Step 3: Cross multiply
    12,164.20x = 18,246.30 × 8,247.40
  4. Step 4: Simplify right side
    12,164.20x = 150,484,534.62
  5. Step 5: Solve for x
    x = 150,484,534.62/12,164.20
  6. Step 6: Final answer
    x = 12,371.10

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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.