Home / 18,575.43-27,864.09-5,428.86

Finding the Fourth Proportional to 18,575.43, 27,864.09 and 5,428.86

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Solution

The fourth proportional to 18,575.43, 27,864.09 and 5,428.86 is: 8,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,575.43 : 27,864.09 = 5,428.86 : x
  2. Step 2: Convert to fraction form
    18,575.43/27,864.09 = 5,428.86/x
  3. Step 3: Cross multiply
    18,575.43x = 27,864.09 × 5,428.86
  4. Step 4: Simplify right side
    18,575.43x = 151,270,243.64
  5. Step 5: Solve for x
    x = 151,270,243.64/18,575.43
  6. Step 6: Final answer
    x = 8,143.57

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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.