Home / 20,108.13-30,157.60-7,629.54

Finding the Fourth Proportional to 20,108.13, 30,157.60 and 7,629.54

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Solution

The fourth proportional to 20,108.13, 30,157.60 and 7,629.54 is: 11,442.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.13 : 30,157.60 = 7,629.54 : x
  2. Step 2: Convert to fraction form
    20,108.13/30,157.60 = 7,629.54/x
  3. Step 3: Cross multiply
    20,108.13x = 30,157.60 × 7,629.54
  4. Step 4: Simplify right side
    20,108.13x = 230,088,615.50
  5. Step 5: Solve for x
    x = 230,088,615.50/20,108.13
  6. Step 6: Final answer
    x = 11,442.57

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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.