Home / 21,174.07-31,755.97-7,130.47

Finding the Fourth Proportional to 21,174.07, 31,755.97 and 7,130.47

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Solution

The fourth proportional to 21,174.07, 31,755.97 and 7,130.47 is: 10,693.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.07 : 31,755.97 = 7,130.47 : x
  2. Step 2: Convert to fraction form
    21,174.07/31,755.97 = 7,130.47/x
  3. Step 3: Cross multiply
    21,174.07x = 31,755.97 × 7,130.47
  4. Step 4: Simplify right side
    21,174.07x = 226,434,796.97
  5. Step 5: Solve for x
    x = 226,434,796.97/21,174.07
  6. Step 6: Final answer
    x = 10,693.97

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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.