Home / 21,433.26-32,149.59-20,903.82

Finding the Fourth Proportional to 21,433.26, 32,149.59 and 20,903.82

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Solution

The fourth proportional to 21,433.26, 32,149.59 and 20,903.82 is: 31,355.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,433.26 : 32,149.59 = 20,903.82 : x
  2. Step 2: Convert to fraction form
    21,433.26/32,149.59 = 20,903.82/x
  3. Step 3: Cross multiply
    21,433.26x = 32,149.59 × 20,903.82
  4. Step 4: Simplify right side
    21,433.26x = 672,049,242.43
  5. Step 5: Solve for x
    x = 672,049,242.43/21,433.26
  6. Step 6: Final answer
    x = 31,355.44

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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.