Home / 30,618.45-45,928.14-8,431.59

Finding the Fourth Proportional to 30,618.45, 45,928.14 and 8,431.59

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Solution

The fourth proportional to 30,618.45, 45,928.14 and 8,431.59 is: 12,647.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,618.45 : 45,928.14 = 8,431.59 : x
  2. Step 2: Convert to fraction form
    30,618.45/45,928.14 = 8,431.59/x
  3. Step 3: Cross multiply
    30,618.45x = 45,928.14 × 8,431.59
  4. Step 4: Simplify right side
    30,618.45x = 387,247,245.94
  5. Step 5: Solve for x
    x = 387,247,245.94/30,618.45
  6. Step 6: Final answer
    x = 12,647.51

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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.