Home / 21,910.40-32,865.60-18,216.80

Finding the Fourth Proportional to 21,910.40, 32,865.60 and 18,216.80

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Solution

The fourth proportional to 21,910.40, 32,865.60 and 18,216.80 is: 27,325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,910.40 : 32,865.60 = 18,216.80 : x
  2. Step 2: Convert to fraction form
    21,910.40/32,865.60 = 18,216.80/x
  3. Step 3: Cross multiply
    21,910.40x = 32,865.60 × 18,216.80
  4. Step 4: Simplify right side
    21,910.40x = 598,706,062.08
  5. Step 5: Solve for x
    x = 598,706,062.08/21,910.40
  6. Step 6: Final answer
    x = 27,325.20

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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.