Home / 13,201.92-19,665.32-12,500.70

Finding the Fourth Proportional to 13,201.92, 19,665.32 and 12,500.70

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Solution

The fourth proportional to 13,201.92, 19,665.32 and 12,500.70 is: 18,620.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,201.92 : 19,665.32 = 12,500.70 : x
  2. Step 2: Convert to fraction form
    13,201.92/19,665.32 = 12,500.70/x
  3. Step 3: Cross multiply
    13,201.92x = 19,665.32 × 12,500.70
  4. Step 4: Simplify right side
    13,201.92x = 245,830,203.22
  5. Step 5: Solve for x
    x = 245,830,203.22/13,201.92
  6. Step 6: Final answer
    x = 18,620.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.