Home / 13,388.56-20,081.31-3,528.61

Finding the Fourth Proportional to 13,388.56, 20,081.31 and 3,528.61

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Solution

The fourth proportional to 13,388.56, 20,081.31 and 3,528.61 is: 5,292.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.56 : 20,081.31 = 3,528.61 : x
  2. Step 2: Convert to fraction form
    13,388.56/20,081.31 = 3,528.61/x
  3. Step 3: Cross multiply
    13,388.56x = 20,081.31 × 3,528.61
  4. Step 4: Simplify right side
    13,388.56x = 70,859,111.28
  5. Step 5: Solve for x
    x = 70,859,111.28/13,388.56
  6. Step 6: Final answer
    x = 5,292.51

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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.