Home / 18,299.74-27,428.41-8,418.28

Finding the Fourth Proportional to 18,299.74, 27,428.41 and 8,418.28

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Solution

The fourth proportional to 18,299.74, 27,428.41 and 8,418.28 is: 12,617.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.74 : 27,428.41 = 8,418.28 : x
  2. Step 2: Convert to fraction form
    18,299.74/27,428.41 = 8,418.28/x
  3. Step 3: Cross multiply
    18,299.74x = 27,428.41 × 8,418.28
  4. Step 4: Simplify right side
    18,299.74x = 230,900,035.33
  5. Step 5: Solve for x
    x = 230,900,035.33/18,299.74
  6. Step 6: Final answer
    x = 12,617.67

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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.