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Finding the Fourth Proportional to 11,891.12, 17,820.92 and 6,332.49

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Solution

The fourth proportional to 11,891.12, 17,820.92 and 6,332.49 is: 9,490.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.12 : 17,820.92 = 6,332.49 : x
  2. Step 2: Convert to fraction form
    11,891.12/17,820.92 = 6,332.49/x
  3. Step 3: Cross multiply
    11,891.12x = 17,820.92 × 6,332.49
  4. Step 4: Simplify right side
    11,891.12x = 112,850,813.52
  5. Step 5: Solve for x
    x = 112,850,813.52/11,891.12
  6. Step 6: Final answer
    x = 9,490.35

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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.