Home / 12,338.24-18,507.19-2,978.18

Finding the Fourth Proportional to 12,338.24, 18,507.19 and 2,978.18

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Solution

The fourth proportional to 12,338.24, 18,507.19 and 2,978.18 is: 4,467.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.24 : 18,507.19 = 2,978.18 : x
  2. Step 2: Convert to fraction form
    12,338.24/18,507.19 = 2,978.18/x
  3. Step 3: Cross multiply
    12,338.24x = 18,507.19 × 2,978.18
  4. Step 4: Simplify right side
    12,338.24x = 55,117,728.22
  5. Step 5: Solve for x
    x = 55,117,728.22/12,338.24
  6. Step 6: Final answer
    x = 4,467.23

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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.