Home / 21,206.74-29,265.15-11,775.28

Finding the Fourth Proportional to 21,206.74, 29,265.15 and 11,775.28

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Solution

The fourth proportional to 21,206.74, 29,265.15 and 11,775.28 is: 16,249.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206.74 : 29,265.15 = 11,775.28 : x
  2. Step 2: Convert to fraction form
    21,206.74/29,265.15 = 11,775.28/x
  3. Step 3: Cross multiply
    21,206.74x = 29,265.15 × 11,775.28
  4. Step 4: Simplify right side
    21,206.74x = 344,605,335.49
  5. Step 5: Solve for x
    x = 344,605,335.49/21,206.74
  6. Step 6: Final answer
    x = 16,249.80

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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.