Home / 21,899.46-30,221.28-12,468

Finding the Fourth Proportional to 21,899.46, 30,221.28 and 12,468

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Solution

The fourth proportional to 21,899.46, 30,221.28 and 12,468 is: 17,205.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,899.46 : 30,221.28 = 12,468 : x
  2. Step 2: Convert to fraction form
    21,899.46/30,221.28 = 12,468/x
  3. Step 3: Cross multiply
    21,899.46x = 30,221.28 × 12,468
  4. Step 4: Simplify right side
    21,899.46x = 376,798,919.04
  5. Step 5: Solve for x
    x = 376,798,919.04/21,899.46
  6. Step 6: Final answer
    x = 17,205.85

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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.