Home / 21,782.22-32,617.89-15,213.02

Finding the Fourth Proportional to 21,782.22, 32,617.89 and 15,213.02

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Solution

The fourth proportional to 21,782.22, 32,617.89 and 15,213.02 is: 22,780.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,782.22 : 32,617.89 = 15,213.02 : x
  2. Step 2: Convert to fraction form
    21,782.22/32,617.89 = 15,213.02/x
  3. Step 3: Cross multiply
    21,782.22x = 32,617.89 × 15,213.02
  4. Step 4: Simplify right side
    21,782.22x = 496,216,449.84
  5. Step 5: Solve for x
    x = 496,216,449.84/21,782.22
  6. Step 6: Final answer
    x = 22,780.81

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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.