Home / 12,147.06-18,217.56-8,626.80

Finding the Fourth Proportional to 12,147.06, 18,217.56 and 8,626.80

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Solution

The fourth proportional to 12,147.06, 18,217.56 and 8,626.80 is: 12,938.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.06 : 18,217.56 = 8,626.80 : x
  2. Step 2: Convert to fraction form
    12,147.06/18,217.56 = 8,626.80/x
  3. Step 3: Cross multiply
    12,147.06x = 18,217.56 × 8,626.80
  4. Step 4: Simplify right side
    12,147.06x = 157,159,246.61
  5. Step 5: Solve for x
    x = 157,159,246.61/12,147.06
  6. Step 6: Final answer
    x = 12,938.05

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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.