Home / 20,965.06-31,440.89-6,922.46

Finding the Fourth Proportional to 20,965.06, 31,440.89 and 6,922.46

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Solution

The fourth proportional to 20,965.06, 31,440.89 and 6,922.46 is: 10,381.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.06 : 31,440.89 = 6,922.46 : x
  2. Step 2: Convert to fraction form
    20,965.06/31,440.89 = 6,922.46/x
  3. Step 3: Cross multiply
    20,965.06x = 31,440.89 × 6,922.46
  4. Step 4: Simplify right side
    20,965.06x = 217,648,399.30
  5. Step 5: Solve for x
    x = 217,648,399.30/20,965.06
  6. Step 6: Final answer
    x = 10,381.48

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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.