Home / 21,318.88-31,976.97-6,526.39

Finding the Fourth Proportional to 21,318.88, 31,976.97 and 6,526.39

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Solution

The fourth proportional to 21,318.88, 31,976.97 and 6,526.39 is: 9,789.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.88 : 31,976.97 = 6,526.39 : x
  2. Step 2: Convert to fraction form
    21,318.88/31,976.97 = 6,526.39/x
  3. Step 3: Cross multiply
    21,318.88x = 31,976.97 × 6,526.39
  4. Step 4: Simplify right side
    21,318.88x = 208,694,177.24
  5. Step 5: Solve for x
    x = 208,694,177.24/21,318.88
  6. Step 6: Final answer
    x = 9,789.17

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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.