Home / 26,768.96-40,136.16-17,990.72

Finding the Fourth Proportional to 26,768.96, 40,136.16 and 17,990.72

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Solution

The fourth proportional to 26,768.96, 40,136.16 and 17,990.72 is: 26,974.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,768.96 : 40,136.16 = 17,990.72 : x
  2. Step 2: Convert to fraction form
    26,768.96/40,136.16 = 17,990.72/x
  3. Step 3: Cross multiply
    26,768.96x = 40,136.16 × 17,990.72
  4. Step 4: Simplify right side
    26,768.96x = 722,078,416.44
  5. Step 5: Solve for x
    x = 722,078,416.44/26,768.96
  6. Step 6: Final answer
    x = 26,974.47

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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.