Home / 30,230.21-45,345.42-9,170.43

Finding the Fourth Proportional to 30,230.21, 45,345.42 and 9,170.43

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Solution

The fourth proportional to 30,230.21, 45,345.42 and 9,170.43 is: 13,755.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,230.21 : 45,345.42 = 9,170.43 : x
  2. Step 2: Convert to fraction form
    30,230.21/45,345.42 = 9,170.43/x
  3. Step 3: Cross multiply
    30,230.21x = 45,345.42 × 9,170.43
  4. Step 4: Simplify right side
    30,230.21x = 415,836,954.08
  5. Step 5: Solve for x
    x = 415,836,954.08/30,230.21
  6. Step 6: Final answer
    x = 13,755.68

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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.