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Finding the Fourth Proportional to 11,612.66, 16,019.25 and 8,069.72

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Solution

The fourth proportional to 11,612.66, 16,019.25 and 8,069.72 is: 11,131.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,612.66 : 16,019.25 = 8,069.72 : x
  2. Step 2: Convert to fraction form
    11,612.66/16,019.25 = 8,069.72/x
  3. Step 3: Cross multiply
    11,612.66x = 16,019.25 × 8,069.72
  4. Step 4: Simplify right side
    11,612.66x = 129,270,862.11
  5. Step 5: Solve for x
    x = 129,270,862.11/11,612.66
  6. Step 6: Final answer
    x = 11,131.89

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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.