Home / 18,436.68-27,659.88-13,395.78

Finding the Fourth Proportional to 18,436.68, 27,659.88 and 13,395.78

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Solution

The fourth proportional to 18,436.68, 27,659.88 and 13,395.78 is: 20,097.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,436.68 : 27,659.88 = 13,395.78 : x
  2. Step 2: Convert to fraction form
    18,436.68/27,659.88 = 13,395.78/x
  3. Step 3: Cross multiply
    18,436.68x = 27,659.88 × 13,395.78
  4. Step 4: Simplify right side
    18,436.68x = 370,525,667.31
  5. Step 5: Solve for x
    x = 370,525,667.31/18,436.68
  6. Step 6: Final answer
    x = 20,097.20

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1.5x scale

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.