Home / 20,449.90-30,662.70-10,608.40

Finding the Fourth Proportional to 20,449.90, 30,662.70 and 10,608.40

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Solution

The fourth proportional to 20,449.90, 30,662.70 and 10,608.40 is: 15,906.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.90 : 30,662.70 = 10,608.40 : x
  2. Step 2: Convert to fraction form
    20,449.90/30,662.70 = 10,608.40/x
  3. Step 3: Cross multiply
    20,449.90x = 30,662.70 × 10,608.40
  4. Step 4: Simplify right side
    20,449.90x = 325,282,186.68
  5. Step 5: Solve for x
    x = 325,282,186.68/20,449.90
  6. Step 6: Final answer
    x = 15,906.30

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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.