Home / 21,964.86-32,940.90-12,603.29

Finding the Fourth Proportional to 21,964.86, 32,940.90 and 12,603.29

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Solution

The fourth proportional to 21,964.86, 32,940.90 and 12,603.29 is: 18,901.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,964.86 : 32,940.90 = 12,603.29 : x
  2. Step 2: Convert to fraction form
    21,964.86/32,940.90 = 12,603.29/x
  3. Step 3: Cross multiply
    21,964.86x = 32,940.90 × 12,603.29
  4. Step 4: Simplify right side
    21,964.86x = 415,163,550.86
  5. Step 5: Solve for x
    x = 415,163,550.86/21,964.86
  6. Step 6: Final answer
    x = 18,901.26

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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.