Home / 20,719.17-31,074.39-6,680.48

Finding the Fourth Proportional to 20,719.17, 31,074.39 and 6,680.48

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Solution

The fourth proportional to 20,719.17, 31,074.39 and 6,680.48 is: 10,019.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.17 : 31,074.39 = 6,680.48 : x
  2. Step 2: Convert to fraction form
    20,719.17/31,074.39 = 6,680.48/x
  3. Step 3: Cross multiply
    20,719.17x = 31,074.39 × 6,680.48
  4. Step 4: Simplify right side
    20,719.17x = 207,591,685.54
  5. Step 5: Solve for x
    x = 207,591,685.54/20,719.17
  6. Step 6: Final answer
    x = 10,019.31

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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.