Home / 21,286.22-29,326.04-16,808.30

Finding the Fourth Proportional to 21,286.22, 29,326.04 and 16,808.30

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Solution

The fourth proportional to 21,286.22, 29,326.04 and 16,808.30 is: 23,156.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.22 : 29,326.04 = 16,808.30 : x
  2. Step 2: Convert to fraction form
    21,286.22/29,326.04 = 16,808.30/x
  3. Step 3: Cross multiply
    21,286.22x = 29,326.04 × 16,808.30
  4. Step 4: Simplify right side
    21,286.22x = 492,920,878.13
  5. Step 5: Solve for x
    x = 492,920,878.13/21,286.22
  6. Step 6: Final answer
    x = 23,156.81

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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.