Home / 31,219.26-43,118.06-20,992.50

Finding the Fourth Proportional to 31,219.26, 43,118.06 and 20,992.50

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Solution

The fourth proportional to 31,219.26, 43,118.06 and 20,992.50 is: 28,993.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,219.26 : 43,118.06 = 20,992.50 : x
  2. Step 2: Convert to fraction form
    31,219.26/43,118.06 = 20,992.50/x
  3. Step 3: Cross multiply
    31,219.26x = 43,118.06 × 20,992.50
  4. Step 4: Simplify right side
    31,219.26x = 905,155,874.55
  5. Step 5: Solve for x
    x = 905,155,874.55/31,219.26
  6. Step 6: Final answer
    x = 28,993.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.