Home / 13,669.49-18,863.96-7,928.08

Finding the Fourth Proportional to 13,669.49, 18,863.96 and 7,928.08

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Solution

The fourth proportional to 13,669.49, 18,863.96 and 7,928.08 is: 10,940.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,669.49 : 18,863.96 = 7,928.08 : x
  2. Step 2: Convert to fraction form
    13,669.49/18,863.96 = 7,928.08/x
  3. Step 3: Cross multiply
    13,669.49x = 18,863.96 × 7,928.08
  4. Step 4: Simplify right side
    13,669.49x = 149,554,897.20
  5. Step 5: Solve for x
    x = 149,554,897.20/13,669.49
  6. Step 6: Final answer
    x = 10,940.78

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1.5x scale

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.