Home / 13,120.66-19,664.53-10,336.35

Finding the Fourth Proportional to 13,120.66, 19,664.53 and 10,336.35

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Solution

The fourth proportional to 13,120.66, 19,664.53 and 10,336.35 is: 15,491.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.66 : 19,664.53 = 10,336.35 : x
  2. Step 2: Convert to fraction form
    13,120.66/19,664.53 = 10,336.35/x
  3. Step 3: Cross multiply
    13,120.66x = 19,664.53 × 10,336.35
  4. Step 4: Simplify right side
    13,120.66x = 203,259,464.67
  5. Step 5: Solve for x
    x = 203,259,464.67/13,120.66
  6. Step 6: Final answer
    x = 15,491.56

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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.