Home / 13,201.16-19,664.21-12,499.95

Finding the Fourth Proportional to 13,201.16, 19,664.21 and 12,499.95

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Solution

The fourth proportional to 13,201.16, 19,664.21 and 12,499.95 is: 18,619.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,201.16 : 19,664.21 = 12,499.95 : x
  2. Step 2: Convert to fraction form
    13,201.16/19,664.21 = 12,499.95/x
  3. Step 3: Cross multiply
    13,201.16x = 19,664.21 × 12,499.95
  4. Step 4: Simplify right side
    13,201.16x = 245,801,579.29
  5. Step 5: Solve for x
    x = 245,801,579.29/13,201.16
  6. Step 6: Final answer
    x = 18,619.69

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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.