Home / 13,930.18-20,881.50-5,162.74

Finding the Fourth Proportional to 13,930.18, 20,881.50 and 5,162.74

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Solution

The fourth proportional to 13,930.18, 20,881.50 and 5,162.74 is: 7,739.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.18 : 20,881.50 = 5,162.74 : x
  2. Step 2: Convert to fraction form
    13,930.18/20,881.50 = 5,162.74/x
  3. Step 3: Cross multiply
    13,930.18x = 20,881.50 × 5,162.74
  4. Step 4: Simplify right side
    13,930.18x = 107,805,755.31
  5. Step 5: Solve for x
    x = 107,805,755.31/13,930.18
  6. Step 6: Final answer
    x = 7,739.01

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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.