Home / 31,703.57-43,763.28-18,286.32

Finding the Fourth Proportional to 31,703.57, 43,763.28 and 18,286.32

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Solution

The fourth proportional to 31,703.57, 43,763.28 and 18,286.32 is: 25,242.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,703.57 : 43,763.28 = 18,286.32 : x
  2. Step 2: Convert to fraction form
    31,703.57/43,763.28 = 18,286.32/x
  3. Step 3: Cross multiply
    31,703.57x = 43,763.28 × 18,286.32
  4. Step 4: Simplify right side
    31,703.57x = 800,269,342.33
  5. Step 5: Solve for x
    x = 800,269,342.33/31,703.57
  6. Step 6: Final answer
    x = 25,242.25

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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.