Home / 21,648.94-32,490.43-11,118.54

Finding the Fourth Proportional to 21,648.94, 32,490.43 and 11,118.54

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Solution

The fourth proportional to 21,648.94, 32,490.43 and 11,118.54 is: 16,686.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.94 : 32,490.43 = 11,118.54 : x
  2. Step 2: Convert to fraction form
    21,648.94/32,490.43 = 11,118.54/x
  3. Step 3: Cross multiply
    21,648.94x = 32,490.43 × 11,118.54
  4. Step 4: Simplify right side
    21,648.94x = 361,246,145.57
  5. Step 5: Solve for x
    x = 361,246,145.57/21,648.94
  6. Step 6: Final answer
    x = 16,686.55

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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.