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Finding the Fourth Proportional to 14,935.56, 20,610.93 and 8,221.11

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Solution

The fourth proportional to 14,935.56, 20,610.93 and 8,221.11 is: 11,345.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,935.56 : 20,610.93 = 8,221.11 : x
  2. Step 2: Convert to fraction form
    14,935.56/20,610.93 = 8,221.11/x
  3. Step 3: Cross multiply
    14,935.56x = 20,610.93 × 8,221.11
  4. Step 4: Simplify right side
    14,935.56x = 169,444,722.73
  5. Step 5: Solve for x
    x = 169,444,722.73/14,935.56
  6. Step 6: Final answer
    x = 11,345.05

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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.