Home / 31,735.78-43,783.65-18,989.26

Finding the Fourth Proportional to 31,735.78, 43,783.65 and 18,989.26

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Solution

The fourth proportional to 31,735.78, 43,783.65 and 18,989.26 is: 26,198.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,735.78 : 43,783.65 = 18,989.26 : x
  2. Step 2: Convert to fraction form
    31,735.78/43,783.65 = 18,989.26/x
  3. Step 3: Cross multiply
    31,735.78x = 43,783.65 × 18,989.26
  4. Step 4: Simplify right side
    31,735.78x = 831,419,004.14
  5. Step 5: Solve for x
    x = 831,419,004.14/31,735.78
  6. Step 6: Final answer
    x = 26,198.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.