Home / 20,741.67-31,112.44-5,159.30

Finding the Fourth Proportional to 20,741.67, 31,112.44 and 5,159.30

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Solution

The fourth proportional to 20,741.67, 31,112.44 and 5,159.30 is: 7,738.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.67 : 31,112.44 = 5,159.30 : x
  2. Step 2: Convert to fraction form
    20,741.67/31,112.44 = 5,159.30/x
  3. Step 3: Cross multiply
    20,741.67x = 31,112.44 × 5,159.30
  4. Step 4: Simplify right side
    20,741.67x = 160,518,262.58
  5. Step 5: Solve for x
    x = 160,518,262.58/20,741.67
  6. Step 6: Final answer
    x = 7,738.93

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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.