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Finding the Fourth Proportional to 21,859.77, 32,789.67 and 9,371.73

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Solution

The fourth proportional to 21,859.77, 32,789.67 and 9,371.73 is: 14,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,859.77 : 32,789.67 = 9,371.73 : x
  2. Step 2: Convert to fraction form
    21,859.77/32,789.67 = 9,371.73/x
  3. Step 3: Cross multiply
    21,859.77x = 32,789.67 × 9,371.73
  4. Step 4: Simplify right side
    21,859.77x = 307,295,934.03
  5. Step 5: Solve for x
    x = 307,295,934.03/21,859.77
  6. Step 6: Final answer
    x = 14,057.60

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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.