Home / 21,239.97-29,311.19-11,808.53

Finding the Fourth Proportional to 21,239.97, 29,311.19 and 11,808.53

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Solution

The fourth proportional to 21,239.97, 29,311.19 and 11,808.53 is: 16,295.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239.97 : 29,311.19 = 11,808.53 : x
  2. Step 2: Convert to fraction form
    21,239.97/29,311.19 = 11,808.53/x
  3. Step 3: Cross multiply
    21,239.97x = 29,311.19 × 11,808.53
  4. Step 4: Simplify right side
    21,239.97x = 346,122,066.45
  5. Step 5: Solve for x
    x = 346,122,066.45/21,239.97
  6. Step 6: Final answer
    x = 16,295.79

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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.