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Finding the Fourth Proportional to 19,762.74, 27,226.80 and 12,676.86

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Solution

The fourth proportional to 19,762.74, 27,226.80 and 12,676.86 is: 17,464.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,762.74 : 27,226.80 = 12,676.86 : x
  2. Step 2: Convert to fraction form
    19,762.74/27,226.80 = 12,676.86/x
  3. Step 3: Cross multiply
    19,762.74x = 27,226.80 × 12,676.86
  4. Step 4: Simplify right side
    19,762.74x = 345,150,331.85
  5. Step 5: Solve for x
    x = 345,150,331.85/19,762.74
  6. Step 6: Final answer
    x = 17,464.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.