Home / 20,629.42-30,938.34-7,976.26

Finding the Fourth Proportional to 20,629.42, 30,938.34 and 7,976.26

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Solution

The fourth proportional to 20,629.42, 30,938.34 and 7,976.26 is: 11,962.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.42 : 30,938.34 = 7,976.26 : x
  2. Step 2: Convert to fraction form
    20,629.42/30,938.34 = 7,976.26/x
  3. Step 3: Cross multiply
    20,629.42x = 30,938.34 × 7,976.26
  4. Step 4: Simplify right side
    20,629.42x = 246,772,243.81
  5. Step 5: Solve for x
    x = 246,772,243.81/20,629.42
  6. Step 6: Final answer
    x = 11,962.15

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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.