Home / 21,546.96-29,737.62-12,115.68

Finding the Fourth Proportional to 21,546.96, 29,737.62 and 12,115.68

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Solution

The fourth proportional to 21,546.96, 29,737.62 and 12,115.68 is: 16,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,546.96 : 29,737.62 = 12,115.68 : x
  2. Step 2: Convert to fraction form
    21,546.96/29,737.62 = 12,115.68/x
  3. Step 3: Cross multiply
    21,546.96x = 29,737.62 × 12,115.68
  4. Step 4: Simplify right side
    21,546.96x = 360,291,487.88
  5. Step 5: Solve for x
    x = 360,291,487.88/21,546.96
  6. Step 6: Final answer
    x = 16,721.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.