Home / 20,768.65-31,153.21-6,728.57

Finding the Fourth Proportional to 20,768.65, 31,153.21 and 6,728.57

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Solution

The fourth proportional to 20,768.65, 31,153.21 and 6,728.57 is: 10,092.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.65 : 31,153.21 = 6,728.57 : x
  2. Step 2: Convert to fraction form
    20,768.65/31,153.21 = 6,728.57/x
  3. Step 3: Cross multiply
    20,768.65x = 31,153.21 × 6,728.57
  4. Step 4: Simplify right side
    20,768.65x = 209,616,498.45
  5. Step 5: Solve for x
    x = 209,616,498.45/20,768.65
  6. Step 6: Final answer
    x = 10,092.93

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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.