Home / 27,142.98-40,720.32-8,422.62

Finding the Fourth Proportional to 27,142.98, 40,720.32 and 8,422.62

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Solution

The fourth proportional to 27,142.98, 40,720.32 and 8,422.62 is: 12,635.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,142.98 : 40,720.32 = 8,422.62 : x
  2. Step 2: Convert to fraction form
    27,142.98/40,720.32 = 8,422.62/x
  3. Step 3: Cross multiply
    27,142.98x = 40,720.32 × 8,422.62
  4. Step 4: Simplify right side
    27,142.98x = 342,971,781.64
  5. Step 5: Solve for x
    x = 342,971,781.64/27,142.98
  6. Step 6: Final answer
    x = 12,635.75

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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.