Home / 20,899.97-31,327.90-6,856.33

Finding the Fourth Proportional to 20,899.97, 31,327.90 and 6,856.33

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Solution

The fourth proportional to 20,899.97, 31,327.90 and 6,856.33 is: 10,277.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.97 : 31,327.90 = 6,856.33 : x
  2. Step 2: Convert to fraction form
    20,899.97/31,327.90 = 6,856.33/x
  3. Step 3: Cross multiply
    20,899.97x = 31,327.90 × 6,856.33
  4. Step 4: Simplify right side
    20,899.97x = 214,794,420.61
  5. Step 5: Solve for x
    x = 214,794,420.61/20,899.97
  6. Step 6: Final answer
    x = 10,277.26

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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.