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Finding the Fourth Proportional to 12,730.80, 19,100.20 and 6,157.20

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Solution

The fourth proportional to 12,730.80, 19,100.20 and 6,157.20 is: 9,237.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,730.80 : 19,100.20 = 6,157.20 : x
  2. Step 2: Convert to fraction form
    12,730.80/19,100.20 = 6,157.20/x
  3. Step 3: Cross multiply
    12,730.80x = 19,100.20 × 6,157.20
  4. Step 4: Simplify right side
    12,730.80x = 117,603,751.44
  5. Step 5: Solve for x
    x = 117,603,751.44/12,730.80
  6. Step 6: Final answer
    x = 9,237.73

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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.