Home / 21,367.72-32,007.99-12,928.96

Finding the Fourth Proportional to 21,367.72, 32,007.99 and 12,928.96

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Solution

The fourth proportional to 21,367.72, 32,007.99 and 12,928.96 is: 19,367.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,367.72 : 32,007.99 = 12,928.96 : x
  2. Step 2: Convert to fraction form
    21,367.72/32,007.99 = 12,928.96/x
  3. Step 3: Cross multiply
    21,367.72x = 32,007.99 × 12,928.96
  4. Step 4: Simplify right side
    21,367.72x = 413,830,022.39
  5. Step 5: Solve for x
    x = 413,830,022.39/21,367.72
  6. Step 6: Final answer
    x = 19,367.07

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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.