Home / 45,428.27-68,138.22-12,147.14

Finding the Fourth Proportional to 45,428.27, 68,138.22 and 12,147.14

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Solution

The fourth proportional to 45,428.27, 68,138.22 and 12,147.14 is: 18,219.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,428.27 : 68,138.22 = 12,147.14 : x
  2. Step 2: Convert to fraction form
    45,428.27/68,138.22 = 12,147.14/x
  3. Step 3: Cross multiply
    45,428.27x = 68,138.22 × 12,147.14
  4. Step 4: Simplify right side
    45,428.27x = 827,684,497.69
  5. Step 5: Solve for x
    x = 827,684,497.69/45,428.27
  6. Step 6: Final answer
    x = 18,219.59

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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.