Home / 21,448.44-29,611.98-16,990.20

Finding the Fourth Proportional to 21,448.44, 29,611.98 and 16,990.20

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Solution

The fourth proportional to 21,448.44, 29,611.98 and 16,990.20 is: 23,456.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,448.44 : 29,611.98 = 16,990.20 : x
  2. Step 2: Convert to fraction form
    21,448.44/29,611.98 = 16,990.20/x
  3. Step 3: Cross multiply
    21,448.44x = 29,611.98 × 16,990.20
  4. Step 4: Simplify right side
    21,448.44x = 503,113,462.60
  5. Step 5: Solve for x
    x = 503,113,462.60/21,448.44
  6. Step 6: Final answer
    x = 23,456.88

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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.