Home / 21,780.66-30,074.24-16,736.93

Finding the Fourth Proportional to 21,780.66, 30,074.24 and 16,736.93

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Solution

The fourth proportional to 21,780.66, 30,074.24 and 16,736.93 is: 23,109.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780.66 : 30,074.24 = 16,736.93 : x
  2. Step 2: Convert to fraction form
    21,780.66/30,074.24 = 16,736.93/x
  3. Step 3: Cross multiply
    21,780.66x = 30,074.24 × 16,736.93
  4. Step 4: Simplify right side
    21,780.66x = 503,350,449.68
  5. Step 5: Solve for x
    x = 503,350,449.68/21,780.66
  6. Step 6: Final answer
    x = 23,109.97

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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.