Home / 12,225.90-16,847.55-8,679.18

Finding the Fourth Proportional to 12,225.90, 16,847.55 and 8,679.18

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Solution

The fourth proportional to 12,225.90, 16,847.55 and 8,679.18 is: 11,960.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.90 : 16,847.55 = 8,679.18 : x
  2. Step 2: Convert to fraction form
    12,225.90/16,847.55 = 8,679.18/x
  3. Step 3: Cross multiply
    12,225.90x = 16,847.55 × 8,679.18
  4. Step 4: Simplify right side
    12,225.90x = 146,222,919.01
  5. Step 5: Solve for x
    x = 146,222,919.01/12,225.90
  6. Step 6: Final answer
    x = 11,960.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.