Home / 31,220.26-43,119.44-20,993.50

Finding the Fourth Proportional to 31,220.26, 43,119.44 and 20,993.50

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Solution

The fourth proportional to 31,220.26, 43,119.44 and 20,993.50 is: 28,994.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,220.26 : 43,119.44 = 20,993.50 : x
  2. Step 2: Convert to fraction form
    31,220.26/43,119.44 = 20,993.50/x
  3. Step 3: Cross multiply
    31,220.26x = 43,119.44 × 20,993.50
  4. Step 4: Simplify right side
    31,220.26x = 905,227,963.64
  5. Step 5: Solve for x
    x = 905,227,963.64/31,220.26
  6. Step 6: Final answer
    x = 28,994.89

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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.