Home / 13,388.78-20,081.46-3,528.92

Finding the Fourth Proportional to 13,388.78, 20,081.46 and 3,528.92

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Solution

The fourth proportional to 13,388.78, 20,081.46 and 3,528.92 is: 5,292.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.78 : 20,081.46 = 3,528.92 : x
  2. Step 2: Convert to fraction form
    13,388.78/20,081.46 = 3,528.92/x
  3. Step 3: Cross multiply
    13,388.78x = 20,081.46 × 3,528.92
  4. Step 4: Simplify right side
    13,388.78x = 70,865,865.82
  5. Step 5: Solve for x
    x = 70,865,865.82/13,388.78
  6. Step 6: Final answer
    x = 5,292.93

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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.