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Finding the Fourth Proportional to 20,115.53, 30,161.53 and 6,071.34

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Solution

The fourth proportional to 20,115.53, 30,161.53 and 6,071.34 is: 9,103.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.53 : 30,161.53 = 6,071.34 : x
  2. Step 2: Convert to fraction form
    20,115.53/30,161.53 = 6,071.34/x
  3. Step 3: Cross multiply
    20,115.53x = 30,161.53 × 6,071.34
  4. Step 4: Simplify right side
    20,115.53x = 183,120,903.55
  5. Step 5: Solve for x
    x = 183,120,903.55/20,115.53
  6. Step 6: Final answer
    x = 9,103.46

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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.