Home / 21,418.79-32,129.09-6,627.99

Finding the Fourth Proportional to 21,418.79, 32,129.09 and 6,627.99

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Solution

The fourth proportional to 21,418.79, 32,129.09 and 6,627.99 is: 9,942.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418.79 : 32,129.09 = 6,627.99 : x
  2. Step 2: Convert to fraction form
    21,418.79/32,129.09 = 6,627.99/x
  3. Step 3: Cross multiply
    21,418.79x = 32,129.09 × 6,627.99
  4. Step 4: Simplify right side
    21,418.79x = 212,951,254.09
  5. Step 5: Solve for x
    x = 212,951,254.09/21,418.79
  6. Step 6: Final answer
    x = 9,942.26

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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.