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Finding the Fourth Proportional to 12,745.70, 19,119.73 and 4,955.10

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Solution

The fourth proportional to 12,745.70, 19,119.73 and 4,955.10 is: 7,433.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,745.70 : 19,119.73 = 4,955.10 : x
  2. Step 2: Convert to fraction form
    12,745.70/19,119.73 = 4,955.10/x
  3. Step 3: Cross multiply
    12,745.70x = 19,119.73 × 4,955.10
  4. Step 4: Simplify right side
    12,745.70x = 94,740,174.12
  5. Step 5: Solve for x
    x = 94,740,174.12/12,745.70
  6. Step 6: Final answer
    x = 7,433.11

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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.