Home / 13,490.03-18,640.99-12,841.87

Finding the Fourth Proportional to 13,490.03, 18,640.99 and 12,841.87

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Solution

The fourth proportional to 13,490.03, 18,640.99 and 12,841.87 is: 17,745.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.03 : 18,640.99 = 12,841.87 : x
  2. Step 2: Convert to fraction form
    13,490.03/18,640.99 = 12,841.87/x
  3. Step 3: Cross multiply
    13,490.03x = 18,640.99 × 12,841.87
  4. Step 4: Simplify right side
    13,490.03x = 239,385,091.54
  5. Step 5: Solve for x
    x = 239,385,091.54/13,490.03
  6. Step 6: Final answer
    x = 17,745.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.