Home / 18,783.08-28,172.38-4,933.16

Finding the Fourth Proportional to 18,783.08, 28,172.38 and 4,933.16

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Solution

The fourth proportional to 18,783.08, 28,172.38 and 4,933.16 is: 7,399.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.08 : 28,172.38 = 4,933.16 : x
  2. Step 2: Convert to fraction form
    18,783.08/28,172.38 = 4,933.16/x
  3. Step 3: Cross multiply
    18,783.08x = 28,172.38 × 4,933.16
  4. Step 4: Simplify right side
    18,783.08x = 138,978,858.12
  5. Step 5: Solve for x
    x = 138,978,858.12/18,783.08
  6. Step 6: Final answer
    x = 7,399.15

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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.