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Finding the Fourth Proportional to 11,919.52, 16,453.05 and 7,385.68

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Solution

The fourth proportional to 11,919.52, 16,453.05 and 7,385.68 is: 10,194.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.52 : 16,453.05 = 7,385.68 : x
  2. Step 2: Convert to fraction form
    11,919.52/16,453.05 = 7,385.68/x
  3. Step 3: Cross multiply
    11,919.52x = 16,453.05 × 7,385.68
  4. Step 4: Simplify right side
    11,919.52x = 121,516,962.32
  5. Step 5: Solve for x
    x = 121,516,962.32/11,919.52
  6. Step 6: Final answer
    x = 10,194.79

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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.