Home / 22,791.45-31,453.79-12,721.86

Finding the Fourth Proportional to 22,791.45, 31,453.79 and 12,721.86

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Solution

The fourth proportional to 22,791.45, 31,453.79 and 12,721.86 is: 17,557.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,791.45 : 31,453.79 = 12,721.86 : x
  2. Step 2: Convert to fraction form
    22,791.45/31,453.79 = 12,721.86/x
  3. Step 3: Cross multiply
    22,791.45x = 31,453.79 × 12,721.86
  4. Step 4: Simplify right side
    22,791.45x = 400,150,649.24
  5. Step 5: Solve for x
    x = 400,150,649.24/22,791.45
  6. Step 6: Final answer
    x = 17,557.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.