Home / 30,408.44-45,390.39-28,213.20

Finding the Fourth Proportional to 30,408.44, 45,390.39 and 28,213.20

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Solution

The fourth proportional to 30,408.44, 45,390.39 and 28,213.20 is: 42,113.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,408.44 : 45,390.39 = 28,213.20 : x
  2. Step 2: Convert to fraction form
    30,408.44/45,390.39 = 28,213.20/x
  3. Step 3: Cross multiply
    30,408.44x = 45,390.39 × 28,213.20
  4. Step 4: Simplify right side
    30,408.44x = 1,280,608,151.15
  5. Step 5: Solve for x
    x = 1,280,608,151.15/30,408.44
  6. Step 6: Final answer
    x = 42,113.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.