Home / 27,149.43-40,730.53-8,428.51

Finding the Fourth Proportional to 27,149.43, 40,730.53 and 8,428.51

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Solution

The fourth proportional to 27,149.43, 40,730.53 and 8,428.51 is: 12,644.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,149.43 : 40,730.53 = 8,428.51 : x
  2. Step 2: Convert to fraction form
    27,149.43/40,730.53 = 8,428.51/x
  3. Step 3: Cross multiply
    27,149.43x = 40,730.53 × 8,428.51
  4. Step 4: Simplify right side
    27,149.43x = 343,297,679.41
  5. Step 5: Solve for x
    x = 343,297,679.41/27,149.43
  6. Step 6: Final answer
    x = 12,644.75

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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.