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Finding the Fourth Proportional to 11,296.08, 15,578.94 and 8,934.12

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Solution

The fourth proportional to 11,296.08, 15,578.94 and 8,934.12 is: 12,321.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,296.08 : 15,578.94 = 8,934.12 : x
  2. Step 2: Convert to fraction form
    11,296.08/15,578.94 = 8,934.12/x
  3. Step 3: Cross multiply
    11,296.08x = 15,578.94 × 8,934.12
  4. Step 4: Simplify right side
    11,296.08x = 139,184,119.43
  5. Step 5: Solve for x
    x = 139,184,119.43/11,296.08
  6. Step 6: Final answer
    x = 12,321.45

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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.