Home / 31,350.78-47,021.30-9,158.19

Finding the Fourth Proportional to 31,350.78, 47,021.30 and 9,158.19

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Solution

The fourth proportional to 31,350.78, 47,021.30 and 9,158.19 is: 13,735.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,350.78 : 47,021.30 = 9,158.19 : x
  2. Step 2: Convert to fraction form
    31,350.78/47,021.30 = 9,158.19/x
  3. Step 3: Cross multiply
    31,350.78x = 47,021.30 × 9,158.19
  4. Step 4: Simplify right side
    31,350.78x = 430,629,999.45
  5. Step 5: Solve for x
    x = 430,629,999.45/31,350.78
  6. Step 6: Final answer
    x = 13,735.86

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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.