Home / 28,057.94-38,714.81-16,121.78

Finding the Fourth Proportional to 28,057.94, 38,714.81 and 16,121.78

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Solution

The fourth proportional to 28,057.94, 38,714.81 and 16,121.78 is: 22,245.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,057.94 : 38,714.81 = 16,121.78 : x
  2. Step 2: Convert to fraction form
    28,057.94/38,714.81 = 16,121.78/x
  3. Step 3: Cross multiply
    28,057.94x = 38,714.81 × 16,121.78
  4. Step 4: Simplify right side
    28,057.94x = 624,151,665.74
  5. Step 5: Solve for x
    x = 624,151,665.74/28,057.94
  6. Step 6: Final answer
    x = 22,245.10

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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.