Home / 13,745.49-20,646.64-13,146.54

Finding the Fourth Proportional to 13,745.49, 20,646.64 and 13,146.54

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Solution

The fourth proportional to 13,745.49, 20,646.64 and 13,146.54 is: 19,746.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.49 : 20,646.64 = 13,146.54 : x
  2. Step 2: Convert to fraction form
    13,745.49/20,646.64 = 13,146.54/x
  3. Step 3: Cross multiply
    13,745.49x = 20,646.64 × 13,146.54
  4. Step 4: Simplify right side
    13,745.49x = 271,431,878.63
  5. Step 5: Solve for x
    x = 271,431,878.63/13,745.49
  6. Step 6: Final answer
    x = 19,746.98

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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.