Home / 20,924.31-31,379.79-6,881.12

Finding the Fourth Proportional to 20,924.31, 31,379.79 and 6,881.12

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Solution

The fourth proportional to 20,924.31, 31,379.79 and 6,881.12 is: 10,319.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.31 : 31,379.79 = 6,881.12 : x
  2. Step 2: Convert to fraction form
    20,924.31/31,379.79 = 6,881.12/x
  3. Step 3: Cross multiply
    20,924.31x = 31,379.79 × 6,881.12
  4. Step 4: Simplify right side
    20,924.31x = 215,928,048.44
  5. Step 5: Solve for x
    x = 215,928,048.44/20,924.31
  6. Step 6: Final answer
    x = 10,319.48

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1.5x scale

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.