Home / 20,767.96-31,152.11-5,185.58

Finding the Fourth Proportional to 20,767.96, 31,152.11 and 5,185.58

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Solution

The fourth proportional to 20,767.96, 31,152.11 and 5,185.58 is: 7,778.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.96 : 31,152.11 = 5,185.58 : x
  2. Step 2: Convert to fraction form
    20,767.96/31,152.11 = 5,185.58/x
  3. Step 3: Cross multiply
    20,767.96x = 31,152.11 × 5,185.58
  4. Step 4: Simplify right side
    20,767.96x = 161,541,803.22
  5. Step 5: Solve for x
    x = 161,541,803.22/20,767.96
  6. Step 6: Final answer
    x = 7,778.42

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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.