Home / 18,942.08-28,406.96-8,945.28

Finding the Fourth Proportional to 18,942.08, 28,406.96 and 8,945.28

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Solution

The fourth proportional to 18,942.08, 28,406.96 and 8,945.28 is: 13,415.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,942.08 : 28,406.96 = 8,945.28 : x
  2. Step 2: Convert to fraction form
    18,942.08/28,406.96 = 8,945.28/x
  3. Step 3: Cross multiply
    18,942.08x = 28,406.96 × 8,945.28
  4. Step 4: Simplify right side
    18,942.08x = 254,108,126.99
  5. Step 5: Solve for x
    x = 254,108,126.99/18,942.08
  6. Step 6: Final answer
    x = 13,415.01

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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.