Home / 13,558.08-18,708.96-7,968

Finding the Fourth Proportional to 13,558.08, 18,708.96 and 7,968

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Solution

The fourth proportional to 13,558.08, 18,708.96 and 7,968 is: 10,995.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.08 : 18,708.96 = 7,968 : x
  2. Step 2: Convert to fraction form
    13,558.08/18,708.96 = 7,968/x
  3. Step 3: Cross multiply
    13,558.08x = 18,708.96 × 7,968
  4. Step 4: Simplify right side
    13,558.08x = 149,072,993.28
  5. Step 5: Solve for x
    x = 149,072,993.28/13,558.08
  6. Step 6: Final answer
    x = 10,995.14

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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.