Home / 18,313.47-27,468.32-12,428.15

Finding the Fourth Proportional to 18,313.47, 27,468.32 and 12,428.15

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Solution

The fourth proportional to 18,313.47, 27,468.32 and 12,428.15 is: 18,640.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.47 : 27,468.32 = 12,428.15 : x
  2. Step 2: Convert to fraction form
    18,313.47/27,468.32 = 12,428.15/x
  3. Step 3: Cross multiply
    18,313.47x = 27,468.32 × 12,428.15
  4. Step 4: Simplify right side
    18,313.47x = 341,380,201.73
  5. Step 5: Solve for x
    x = 341,380,201.73/18,313.47
  6. Step 6: Final answer
    x = 18,640.93

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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.