Home / 21,855.28-32,782.88-7,996.72

Finding the Fourth Proportional to 21,855.28, 32,782.88 and 7,996.72

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Solution

The fourth proportional to 21,855.28, 32,782.88 and 7,996.72 is: 11,995.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,855.28 : 32,782.88 = 7,996.72 : x
  2. Step 2: Convert to fraction form
    21,855.28/32,782.88 = 7,996.72/x
  3. Step 3: Cross multiply
    21,855.28x = 32,782.88 × 7,996.72
  4. Step 4: Simplify right side
    21,855.28x = 262,155,512.15
  5. Step 5: Solve for x
    x = 262,155,512.15/21,855.28
  6. Step 6: Final answer
    x = 11,995.07

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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.