Home / 31,569.36-43,563.64-18,131.16

Finding the Fourth Proportional to 31,569.36, 43,563.64 and 18,131.16

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Solution

The fourth proportional to 31,569.36, 43,563.64 and 18,131.16 is: 25,019.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,569.36 : 43,563.64 = 18,131.16 : x
  2. Step 2: Convert to fraction form
    31,569.36/43,563.64 = 18,131.16/x
  3. Step 3: Cross multiply
    31,569.36x = 43,563.64 × 18,131.16
  4. Step 4: Simplify right side
    31,569.36x = 789,859,327.02
  5. Step 5: Solve for x
    x = 789,859,327.02/31,569.36
  6. Step 6: Final answer
    x = 25,019.81

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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.