Home / 33,989.85-51,017.21-20,867.85

Finding the Fourth Proportional to 33,989.85, 51,017.21 and 20,867.85

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Solution

The fourth proportional to 33,989.85, 51,017.21 and 20,867.85 is: 31,321.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,989.85 : 51,017.21 = 20,867.85 : x
  2. Step 2: Convert to fraction form
    33,989.85/51,017.21 = 20,867.85/x
  3. Step 3: Cross multiply
    33,989.85x = 51,017.21 × 20,867.85
  4. Step 4: Simplify right side
    33,989.85x = 1,064,619,381.36
  5. Step 5: Solve for x
    x = 1,064,619,381.36/33,989.85
  6. Step 6: Final answer
    x = 31,321.69

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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.