Home / 20,901.93-31,352.07-5,319.96

Finding the Fourth Proportional to 20,901.93, 31,352.07 and 5,319.96

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Solution

The fourth proportional to 20,901.93, 31,352.07 and 5,319.96 is: 7,979.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.93 : 31,352.07 = 5,319.96 : x
  2. Step 2: Convert to fraction form
    20,901.93/31,352.07 = 5,319.96/x
  3. Step 3: Cross multiply
    20,901.93x = 31,352.07 × 5,319.96
  4. Step 4: Simplify right side
    20,901.93x = 166,791,758.32
  5. Step 5: Solve for x
    x = 166,791,758.32/20,901.93
  6. Step 6: Final answer
    x = 7,979.73

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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.