Home / 31,351.80-47,027.70-9,164.28

Finding the Fourth Proportional to 31,351.80, 47,027.70 and 9,164.28

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Solution

The fourth proportional to 31,351.80, 47,027.70 and 9,164.28 is: 13,746.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,351.80 : 47,027.70 = 9,164.28 : x
  2. Step 2: Convert to fraction form
    31,351.80/47,027.70 = 9,164.28/x
  3. Step 3: Cross multiply
    31,351.80x = 47,027.70 × 9,164.28
  4. Step 4: Simplify right side
    31,351.80x = 430,975,010.56
  5. Step 5: Solve for x
    x = 430,975,010.56/31,351.80
  6. Step 6: Final answer
    x = 13,746.42

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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.