Home / 18,812.09-28,218.11-5,664.44

Finding the Fourth Proportional to 18,812.09, 28,218.11 and 5,664.44

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Solution

The fourth proportional to 18,812.09, 28,218.11 and 5,664.44 is: 8,496.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,812.09 : 28,218.11 = 5,664.44 : x
  2. Step 2: Convert to fraction form
    18,812.09/28,218.11 = 5,664.44/x
  3. Step 3: Cross multiply
    18,812.09x = 28,218.11 × 5,664.44
  4. Step 4: Simplify right side
    18,812.09x = 159,839,621.60
  5. Step 5: Solve for x
    x = 159,839,621.60/18,812.09
  6. Step 6: Final answer
    x = 8,496.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.