Home / 21,827.36-30,121.76-11,891.36

Finding the Fourth Proportional to 21,827.36, 30,121.76 and 11,891.36

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Solution

The fourth proportional to 21,827.36, 30,121.76 and 11,891.36 is: 16,410.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,827.36 : 30,121.76 = 11,891.36 : x
  2. Step 2: Convert to fraction form
    21,827.36/30,121.76 = 11,891.36/x
  3. Step 3: Cross multiply
    21,827.36x = 30,121.76 × 11,891.36
  4. Step 4: Simplify right side
    21,827.36x = 358,188,691.99
  5. Step 5: Solve for x
    x = 358,188,691.99/21,827.36
  6. Step 6: Final answer
    x = 16,410.08

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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.