Home / 21,174.57-31,763.43-7,134.62

Finding the Fourth Proportional to 21,174.57, 31,763.43 and 7,134.62

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Solution

The fourth proportional to 21,174.57, 31,763.43 and 7,134.62 is: 10,702.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.57 : 31,763.43 = 7,134.62 : x
  2. Step 2: Convert to fraction form
    21,174.57/31,763.43 = 7,134.62/x
  3. Step 3: Cross multiply
    21,174.57x = 31,763.43 × 7,134.62
  4. Step 4: Simplify right side
    21,174.57x = 226,619,844.13
  5. Step 5: Solve for x
    x = 226,619,844.13/21,174.57
  6. Step 6: Final answer
    x = 10,702.45

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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.