Home / 21,581.26-29,799.03-16,878.94

Finding the Fourth Proportional to 21,581.26, 29,799.03 and 16,878.94

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Solution

The fourth proportional to 21,581.26, 29,799.03 and 16,878.94 is: 23,306.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581.26 : 29,799.03 = 16,878.94 : x
  2. Step 2: Convert to fraction form
    21,581.26/29,799.03 = 16,878.94/x
  3. Step 3: Cross multiply
    21,581.26x = 29,799.03 × 16,878.94
  4. Step 4: Simplify right side
    21,581.26x = 502,976,039.43
  5. Step 5: Solve for x
    x = 502,976,039.43/21,581.26
  6. Step 6: Final answer
    x = 23,306.15

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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.