Home / 21,376.28-32,065.81-8,228.66

Finding the Fourth Proportional to 21,376.28, 32,065.81 and 8,228.66

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Solution

The fourth proportional to 21,376.28, 32,065.81 and 8,228.66 is: 12,343.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.28 : 32,065.81 = 8,228.66 : x
  2. Step 2: Convert to fraction form
    21,376.28/32,065.81 = 8,228.66/x
  3. Step 3: Cross multiply
    21,376.28x = 32,065.81 × 8,228.66
  4. Step 4: Simplify right side
    21,376.28x = 263,858,467.21
  5. Step 5: Solve for x
    x = 263,858,467.21/21,376.28
  6. Step 6: Final answer
    x = 12,343.52

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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.