Home / 31,395.48-47,047.14-15,791.64

Finding the Fourth Proportional to 31,395.48, 47,047.14 and 15,791.64

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Solution

The fourth proportional to 31,395.48, 47,047.14 and 15,791.64 is: 23,664.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,395.48 : 47,047.14 = 15,791.64 : x
  2. Step 2: Convert to fraction form
    31,395.48/47,047.14 = 15,791.64/x
  3. Step 3: Cross multiply
    31,395.48x = 47,047.14 × 15,791.64
  4. Step 4: Simplify right side
    31,395.48x = 742,951,497.91
  5. Step 5: Solve for x
    x = 742,951,497.91/31,395.48
  6. Step 6: Final answer
    x = 23,664.28

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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.