Home / 27,143.26-40,720.73-8,422.92

Finding the Fourth Proportional to 27,143.26, 40,720.73 and 8,422.92

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Solution

The fourth proportional to 27,143.26, 40,720.73 and 8,422.92 is: 12,636.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,143.26 : 40,720.73 = 8,422.92 : x
  2. Step 2: Convert to fraction form
    27,143.26/40,720.73 = 8,422.92/x
  3. Step 3: Cross multiply
    27,143.26x = 40,720.73 × 8,422.92
  4. Step 4: Simplify right side
    27,143.26x = 342,987,409.02
  5. Step 5: Solve for x
    x = 342,987,409.02/27,143.26
  6. Step 6: Final answer
    x = 12,636.19

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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.