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Finding the Fourth Proportional to 15,229.11, 21,014.44 and 8,854.82

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Solution

The fourth proportional to 15,229.11, 21,014.44 and 8,854.82 is: 12,218.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,229.11 : 21,014.44 = 8,854.82 : x
  2. Step 2: Convert to fraction form
    15,229.11/21,014.44 = 8,854.82/x
  3. Step 3: Cross multiply
    15,229.11x = 21,014.44 × 8,854.82
  4. Step 4: Simplify right side
    15,229.11x = 186,079,035.20
  5. Step 5: Solve for x
    x = 186,079,035.20/15,229.11
  6. Step 6: Final answer
    x = 12,218.64

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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.