Home / 21,738.08-29,980.32-16,074.56

Finding the Fourth Proportional to 21,738.08, 29,980.32 and 16,074.56

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Solution

The fourth proportional to 21,738.08, 29,980.32 and 16,074.56 is: 22,169.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,738.08 : 29,980.32 = 16,074.56 : x
  2. Step 2: Convert to fraction form
    21,738.08/29,980.32 = 16,074.56/x
  3. Step 3: Cross multiply
    21,738.08x = 29,980.32 × 16,074.56
  4. Step 4: Simplify right side
    21,738.08x = 481,920,452.66
  5. Step 5: Solve for x
    x = 481,920,452.66/21,738.08
  6. Step 6: Final answer
    x = 22,169.41

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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.