Home / 15,936.39-21,992.19-8,862.99

Finding the Fourth Proportional to 15,936.39, 21,992.19 and 8,862.99

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Solution

The fourth proportional to 15,936.39, 21,992.19 and 8,862.99 is: 12,230.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,936.39 : 21,992.19 = 8,862.99 : x
  2. Step 2: Convert to fraction form
    15,936.39/21,992.19 = 8,862.99/x
  3. Step 3: Cross multiply
    15,936.39x = 21,992.19 × 8,862.99
  4. Step 4: Simplify right side
    15,936.39x = 194,916,560.05
  5. Step 5: Solve for x
    x = 194,916,560.05/15,936.39
  6. Step 6: Final answer
    x = 12,230.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.