Home / 20,600.34-30,900.19-7,449.49

Finding the Fourth Proportional to 20,600.34, 30,900.19 and 7,449.49

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Solution

The fourth proportional to 20,600.34, 30,900.19 and 7,449.49 is: 11,174.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.34 : 30,900.19 = 7,449.49 : x
  2. Step 2: Convert to fraction form
    20,600.34/30,900.19 = 7,449.49/x
  3. Step 3: Cross multiply
    20,600.34x = 30,900.19 × 7,449.49
  4. Step 4: Simplify right side
    20,600.34x = 230,190,656.40
  5. Step 5: Solve for x
    x = 230,190,656.40/20,600.34
  6. Step 6: Final answer
    x = 11,174.12

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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.