Home / 21,577.14-32,369.82-8,428.68

Finding the Fourth Proportional to 21,577.14, 32,369.82 and 8,428.68

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Solution

The fourth proportional to 21,577.14, 32,369.82 and 8,428.68 is: 12,644.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,577.14 : 32,369.82 = 8,428.68 : x
  2. Step 2: Convert to fraction form
    21,577.14/32,369.82 = 8,428.68/x
  3. Step 3: Cross multiply
    21,577.14x = 32,369.82 × 8,428.68
  4. Step 4: Simplify right side
    21,577.14x = 272,834,854.44
  5. Step 5: Solve for x
    x = 272,834,854.44/21,577.14
  6. Step 6: Final answer
    x = 12,644.63

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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.