Home / 21,827.28-30,121.66-12,395.82

Finding the Fourth Proportional to 21,827.28, 30,121.66 and 12,395.82

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Solution

The fourth proportional to 21,827.28, 30,121.66 and 12,395.82 is: 17,106.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,827.28 : 30,121.66 = 12,395.82 : x
  2. Step 2: Convert to fraction form
    21,827.28/30,121.66 = 12,395.82/x
  3. Step 3: Cross multiply
    21,827.28x = 30,121.66 × 12,395.82
  4. Step 4: Simplify right side
    21,827.28x = 373,382,675.46
  5. Step 5: Solve for x
    x = 373,382,675.46/21,827.28
  6. Step 6: Final answer
    x = 17,106.24

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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.