Home / 20,376.88-30,564.97-5,585.78

Finding the Fourth Proportional to 20,376.88, 30,564.97 and 5,585.78

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Solution

The fourth proportional to 20,376.88, 30,564.97 and 5,585.78 is: 8,378.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376.88 : 30,564.97 = 5,585.78 : x
  2. Step 2: Convert to fraction form
    20,376.88/30,564.97 = 5,585.78/x
  3. Step 3: Cross multiply
    20,376.88x = 30,564.97 × 5,585.78
  4. Step 4: Simplify right side
    20,376.88x = 170,729,260.57
  5. Step 5: Solve for x
    x = 170,729,260.57/20,376.88
  6. Step 6: Final answer
    x = 8,378.58

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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.