Home / 21,493.40-32,220.66-7,639.16

Finding the Fourth Proportional to 21,493.40, 32,220.66 and 7,639.16

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Solution

The fourth proportional to 21,493.40, 32,220.66 and 7,639.16 is: 11,451.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,493.40 : 32,220.66 = 7,639.16 : x
  2. Step 2: Convert to fraction form
    21,493.40/32,220.66 = 7,639.16/x
  3. Step 3: Cross multiply
    21,493.40x = 32,220.66 × 7,639.16
  4. Step 4: Simplify right side
    21,493.40x = 246,138,777.05
  5. Step 5: Solve for x
    x = 246,138,777.05/21,493.40
  6. Step 6: Final answer
    x = 11,451.83

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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.