Home / 30,436.16-41,923.78-21,467.90

Finding the Fourth Proportional to 30,436.16, 41,923.78 and 21,467.90

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Solution

The fourth proportional to 30,436.16, 41,923.78 and 21,467.90 is: 29,570.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,436.16 : 41,923.78 = 21,467.90 : x
  2. Step 2: Convert to fraction form
    30,436.16/41,923.78 = 21,467.90/x
  3. Step 3: Cross multiply
    30,436.16x = 41,923.78 × 21,467.90
  4. Step 4: Simplify right side
    30,436.16x = 900,015,567.80
  5. Step 5: Solve for x
    x = 900,015,567.80/30,436.16
  6. Step 6: Final answer
    x = 29,570.61

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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.