Home / 20,743.05-31,104.85-7,586.22

Finding the Fourth Proportional to 20,743.05, 31,104.85 and 7,586.22

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Solution

The fourth proportional to 20,743.05, 31,104.85 and 7,586.22 is: 11,375.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.05 : 31,104.85 = 7,586.22 : x
  2. Step 2: Convert to fraction form
    20,743.05/31,104.85 = 7,586.22/x
  3. Step 3: Cross multiply
    20,743.05x = 31,104.85 × 7,586.22
  4. Step 4: Simplify right side
    20,743.05x = 235,968,235.17
  5. Step 5: Solve for x
    x = 235,968,235.17/20,743.05
  6. Step 6: Final answer
    x = 11,375.77

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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.