Home / 21,422.09-32,129.96-8,272.82

Finding the Fourth Proportional to 21,422.09, 32,129.96 and 8,272.82

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Solution

The fourth proportional to 21,422.09, 32,129.96 and 8,272.82 is: 12,408.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.09 : 32,129.96 = 8,272.82 : x
  2. Step 2: Convert to fraction form
    21,422.09/32,129.96 = 8,272.82/x
  3. Step 3: Cross multiply
    21,422.09x = 32,129.96 × 8,272.82
  4. Step 4: Simplify right side
    21,422.09x = 265,805,173.67
  5. Step 5: Solve for x
    x = 265,805,173.67/21,422.09
  6. Step 6: Final answer
    x = 12,408.00

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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.