Home / 21,085.77-31,677.68-19,952.02

Finding the Fourth Proportional to 21,085.77, 31,677.68 and 19,952.02

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Solution

The fourth proportional to 21,085.77, 31,677.68 and 19,952.02 is: 29,974.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.77 : 31,677.68 = 19,952.02 : x
  2. Step 2: Convert to fraction form
    21,085.77/31,677.68 = 19,952.02/x
  3. Step 3: Cross multiply
    21,085.77x = 31,677.68 × 19,952.02
  4. Step 4: Simplify right side
    21,085.77x = 632,033,794.39
  5. Step 5: Solve for x
    x = 632,033,794.39/21,085.77
  6. Step 6: Final answer
    x = 29,974.43

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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.