Home / 21,638.14-32,451.64-8,490.62

Finding the Fourth Proportional to 21,638.14, 32,451.64 and 8,490.62

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Solution

The fourth proportional to 21,638.14, 32,451.64 and 8,490.62 is: 12,733.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,638.14 : 32,451.64 = 8,490.62 : x
  2. Step 2: Convert to fraction form
    21,638.14/32,451.64 = 8,490.62/x
  3. Step 3: Cross multiply
    21,638.14x = 32,451.64 × 8,490.62
  4. Step 4: Simplify right side
    21,638.14x = 275,534,603.52
  5. Step 5: Solve for x
    x = 275,534,603.52/21,638.14
  6. Step 6: Final answer
    x = 12,733.75

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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.