Home / 21,192.36-31,791.46-7,156.40

Finding the Fourth Proportional to 21,192.36, 31,791.46 and 7,156.40

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Solution

The fourth proportional to 21,192.36, 31,791.46 and 7,156.40 is: 10,735.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.36 : 31,791.46 = 7,156.40 : x
  2. Step 2: Convert to fraction form
    21,192.36/31,791.46 = 7,156.40/x
  3. Step 3: Cross multiply
    21,192.36x = 31,791.46 × 7,156.40
  4. Step 4: Simplify right side
    21,192.36x = 227,512,404.34
  5. Step 5: Solve for x
    x = 227,512,404.34/21,192.36
  6. Step 6: Final answer
    x = 10,735.59

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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.