Home / 21,832.40-32,705.40-20,277.20

Finding the Fourth Proportional to 21,832.40, 32,705.40 and 20,277.20

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Solution

The fourth proportional to 21,832.40, 32,705.40 and 20,277.20 is: 30,375.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,832.40 : 32,705.40 = 20,277.20 : x
  2. Step 2: Convert to fraction form
    21,832.40/32,705.40 = 20,277.20/x
  3. Step 3: Cross multiply
    21,832.40x = 32,705.40 × 20,277.20
  4. Step 4: Simplify right side
    21,832.40x = 663,173,936.88
  5. Step 5: Solve for x
    x = 663,173,936.88/21,832.40
  6. Step 6: Final answer
    x = 30,375.68

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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.