Home / 20,132.15-30,190.46-7,645.59

Finding the Fourth Proportional to 20,132.15, 30,190.46 and 7,645.59

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Solution

The fourth proportional to 20,132.15, 30,190.46 and 7,645.59 is: 11,465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.15 : 30,190.46 = 7,645.59 : x
  2. Step 2: Convert to fraction form
    20,132.15/30,190.46 = 7,645.59/x
  3. Step 3: Cross multiply
    20,132.15x = 30,190.46 × 7,645.59
  4. Step 4: Simplify right side
    20,132.15x = 230,823,840.84
  5. Step 5: Solve for x
    x = 230,823,840.84/20,132.15
  6. Step 6: Final answer
    x = 11,465.44

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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.