Home / 12,617.57-18,904.83-8,912.66

Finding the Fourth Proportional to 12,617.57, 18,904.83 and 8,912.66

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Solution

The fourth proportional to 12,617.57, 18,904.83 and 8,912.66 is: 13,353.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,617.57 : 18,904.83 = 8,912.66 : x
  2. Step 2: Convert to fraction form
    12,617.57/18,904.83 = 8,912.66/x
  3. Step 3: Cross multiply
    12,617.57x = 18,904.83 × 8,912.66
  4. Step 4: Simplify right side
    12,617.57x = 168,492,322.15
  5. Step 5: Solve for x
    x = 168,492,322.15/12,617.57
  6. Step 6: Final answer
    x = 13,353.79

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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.