Home / 13,143.96-19,745.10-12,729.24

Finding the Fourth Proportional to 13,143.96, 19,745.10 and 12,729.24

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Solution

The fourth proportional to 13,143.96, 19,745.10 and 12,729.24 is: 19,122.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.96 : 19,745.10 = 12,729.24 : x
  2. Step 2: Convert to fraction form
    13,143.96/19,745.10 = 12,729.24/x
  3. Step 3: Cross multiply
    13,143.96x = 19,745.10 × 12,729.24
  4. Step 4: Simplify right side
    13,143.96x = 251,340,116.72
  5. Step 5: Solve for x
    x = 251,340,116.72/13,143.96
  6. Step 6: Final answer
    x = 19,122.10

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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.