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Finding the Fourth Proportional to 21,332.00, 31,998.15 and 13,982.99

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Solution

The fourth proportional to 21,332.00, 31,998.15 and 13,982.99 is: 20,974.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.00 : 31,998.15 = 13,982.99 : x
  2. Step 2: Convert to fraction form
    21,332.00/31,998.15 = 13,982.99/x
  3. Step 3: Cross multiply
    21,332.00x = 31,998.15 × 13,982.99
  4. Step 4: Simplify right side
    21,332.00x = 447,429,651.48
  5. Step 5: Solve for x
    x = 447,429,651.48/21,332.00
  6. Step 6: Final answer
    x = 20,974.57

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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.