Home / 21,611.13-32,366.84-20,863.09

Finding the Fourth Proportional to 21,611.13, 32,366.84 and 20,863.09

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Solution

The fourth proportional to 21,611.13, 32,366.84 and 20,863.09 is: 31,246.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.13 : 32,366.84 = 20,863.09 : x
  2. Step 2: Convert to fraction form
    21,611.13/32,366.84 = 20,863.09/x
  3. Step 3: Cross multiply
    21,611.13x = 32,366.84 × 20,863.09
  4. Step 4: Simplify right side
    21,611.13x = 675,272,440.47
  5. Step 5: Solve for x
    x = 675,272,440.47/21,611.13
  6. Step 6: Final answer
    x = 31,246.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.