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Finding the Fourth Proportional to 15,169.60, 20,927.91 and 9,199.09

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Solution

The fourth proportional to 15,169.60, 20,927.91 and 9,199.09 is: 12,691.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,169.60 : 20,927.91 = 9,199.09 : x
  2. Step 2: Convert to fraction form
    15,169.60/20,927.91 = 9,199.09/x
  3. Step 3: Cross multiply
    15,169.60x = 20,927.91 × 9,199.09
  4. Step 4: Simplify right side
    15,169.60x = 192,517,727.60
  5. Step 5: Solve for x
    x = 192,517,727.60/15,169.60
  6. Step 6: Final answer
    x = 12,691.02

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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.