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Finding the Fourth Proportional to 12,771.98, 19,158.08 and 4,451.98

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Solution

The fourth proportional to 12,771.98, 19,158.08 and 4,451.98 is: 6,678.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771.98 : 19,158.08 = 4,451.98 : x
  2. Step 2: Convert to fraction form
    12,771.98/19,158.08 = 4,451.98/x
  3. Step 3: Cross multiply
    12,771.98x = 19,158.08 × 4,451.98
  4. Step 4: Simplify right side
    12,771.98x = 85,291,466.89
  5. Step 5: Solve for x
    x = 85,291,466.89/12,771.98
  6. Step 6: Final answer
    x = 6,678.01

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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.