Home / 21,026.24-31,542.60-7,172

Finding the Fourth Proportional to 21,026.24, 31,542.60 and 7,172

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Solution

The fourth proportional to 21,026.24, 31,542.60 and 7,172 is: 10,759.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.24 : 31,542.60 = 7,172 : x
  2. Step 2: Convert to fraction form
    21,026.24/31,542.60 = 7,172/x
  3. Step 3: Cross multiply
    21,026.24x = 31,542.60 × 7,172
  4. Step 4: Simplify right side
    21,026.24x = 226,223,527.20
  5. Step 5: Solve for x
    x = 226,223,527.20/21,026.24
  6. Step 6: Final answer
    x = 10,759.11

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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.