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Finding the Fourth Proportional to 21,447.61, 32,174.24 and 7,936.93

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Solution

The fourth proportional to 21,447.61, 32,174.24 and 7,936.93 is: 11,906.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,447.61 : 32,174.24 = 7,936.93 : x
  2. Step 2: Convert to fraction form
    21,447.61/32,174.24 = 7,936.93/x
  3. Step 3: Cross multiply
    21,447.61x = 32,174.24 × 7,936.93
  4. Step 4: Simplify right side
    21,447.61x = 255,364,690.68
  5. Step 5: Solve for x
    x = 255,364,690.68/21,447.61
  6. Step 6: Final answer
    x = 11,906.44

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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.