Home / 12,409.10-18,618.66-7,969.03

Finding the Fourth Proportional to 12,409.10, 18,618.66 and 7,969.03

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Solution

The fourth proportional to 12,409.10, 18,618.66 and 7,969.03 is: 11,956.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,409.10 : 18,618.66 = 7,969.03 : x
  2. Step 2: Convert to fraction form
    12,409.10/18,618.66 = 7,969.03/x
  3. Step 3: Cross multiply
    12,409.10x = 18,618.66 × 7,969.03
  4. Step 4: Simplify right side
    12,409.10x = 148,372,718.28
  5. Step 5: Solve for x
    x = 148,372,718.28/12,409.10
  6. Step 6: Final answer
    x = 11,956.77

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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.