Home / 18,274.68-27,409.55-5,128.07

Finding the Fourth Proportional to 18,274.68, 27,409.55 and 5,128.07

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Solution

The fourth proportional to 18,274.68, 27,409.55 and 5,128.07 is: 7,691.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.68 : 27,409.55 = 5,128.07 : x
  2. Step 2: Convert to fraction form
    18,274.68/27,409.55 = 5,128.07/x
  3. Step 3: Cross multiply
    18,274.68x = 27,409.55 × 5,128.07
  4. Step 4: Simplify right side
    18,274.68x = 140,557,928.38
  5. Step 5: Solve for x
    x = 140,557,928.38/18,274.68
  6. Step 6: Final answer
    x = 7,691.40

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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.