Home / 31,687.44-47,541.96-11,971.68

Finding the Fourth Proportional to 31,687.44, 47,541.96 and 11,971.68

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Solution

The fourth proportional to 31,687.44, 47,541.96 and 11,971.68 is: 17,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.44 : 47,541.96 = 11,971.68 : x
  2. Step 2: Convert to fraction form
    31,687.44/47,541.96 = 11,971.68/x
  3. Step 3: Cross multiply
    31,687.44x = 47,541.96 × 11,971.68
  4. Step 4: Simplify right side
    31,687.44x = 569,157,131.69
  5. Step 5: Solve for x
    x = 569,157,131.69/31,687.44
  6. Step 6: Final answer
    x = 17,961.60

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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.