Home / 21,192.52-31,791.75-6,399.76

Finding the Fourth Proportional to 21,192.52, 31,791.75 and 6,399.76

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Solution

The fourth proportional to 21,192.52, 31,791.75 and 6,399.76 is: 9,600.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.52 : 31,791.75 = 6,399.76 : x
  2. Step 2: Convert to fraction form
    21,192.52/31,791.75 = 6,399.76/x
  3. Step 3: Cross multiply
    21,192.52x = 31,791.75 × 6,399.76
  4. Step 4: Simplify right side
    21,192.52x = 203,459,569.98
  5. Step 5: Solve for x
    x = 203,459,569.98/21,192.52
  6. Step 6: Final answer
    x = 9,600.54

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1.5x scale

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.