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Finding the Fourth Proportional to 14,651.13, 20,218.92 and 8,364.09

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Solution

The fourth proportional to 14,651.13, 20,218.92 and 8,364.09 is: 11,542.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,651.13 : 20,218.92 = 8,364.09 : x
  2. Step 2: Convert to fraction form
    14,651.13/20,218.92 = 8,364.09/x
  3. Step 3: Cross multiply
    14,651.13x = 20,218.92 × 8,364.09
  4. Step 4: Simplify right side
    14,651.13x = 169,112,866.58
  5. Step 5: Solve for x
    x = 169,112,866.58/14,651.13
  6. Step 6: Final answer
    x = 11,542.65

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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.