Home / 21,398.26-29,530.97-11,966.89

Finding the Fourth Proportional to 21,398.26, 29,530.97 and 11,966.89

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Solution

The fourth proportional to 21,398.26, 29,530.97 and 11,966.89 is: 16,515.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,398.26 : 29,530.97 = 11,966.89 : x
  2. Step 2: Convert to fraction form
    21,398.26/29,530.97 = 11,966.89/x
  3. Step 3: Cross multiply
    21,398.26x = 29,530.97 × 11,966.89
  4. Step 4: Simplify right side
    21,398.26x = 353,393,869.58
  5. Step 5: Solve for x
    x = 353,393,869.58/21,398.26
  6. Step 6: Final answer
    x = 16,515.08

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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.