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Finding the Fourth Proportional to 12,616.15, 18,899.62 and 10,861.08

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Solution

The fourth proportional to 12,616.15, 18,899.62 and 10,861.08 is: 16,270.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,616.15 : 18,899.62 = 10,861.08 : x
  2. Step 2: Convert to fraction form
    12,616.15/18,899.62 = 10,861.08/x
  3. Step 3: Cross multiply
    12,616.15x = 18,899.62 × 10,861.08
  4. Step 4: Simplify right side
    12,616.15x = 205,270,332.04
  5. Step 5: Solve for x
    x = 205,270,332.04/12,616.15
  6. Step 6: Final answer
    x = 16,270.44

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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.