Home / 31,558.85-47,346.50-11,837.78

Finding the Fourth Proportional to 31,558.85, 47,346.50 and 11,837.78

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Solution

The fourth proportional to 31,558.85, 47,346.50 and 11,837.78 is: 17,759.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,558.85 : 47,346.50 = 11,837.78 : x
  2. Step 2: Convert to fraction form
    31,558.85/47,346.50 = 11,837.78/x
  3. Step 3: Cross multiply
    31,558.85x = 47,346.50 × 11,837.78
  4. Step 4: Simplify right side
    31,558.85x = 560,477,243.63
  5. Step 5: Solve for x
    x = 560,477,243.63/31,558.85
  6. Step 6: Final answer
    x = 17,759.75

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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.