Home / 21,812.82-32,717.40-8,661.66

Finding the Fourth Proportional to 21,812.82, 32,717.40 and 8,661.66

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Solution

The fourth proportional to 21,812.82, 32,717.40 and 8,661.66 is: 12,991.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,812.82 : 32,717.40 = 8,661.66 : x
  2. Step 2: Convert to fraction form
    21,812.82/32,717.40 = 8,661.66/x
  3. Step 3: Cross multiply
    21,812.82x = 32,717.40 × 8,661.66
  4. Step 4: Simplify right side
    21,812.82x = 283,386,872.19
  5. Step 5: Solve for x
    x = 283,386,872.19/21,812.82
  6. Step 6: Final answer
    x = 12,991.76

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1.5x scale

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.