Home / 19,311.08-26,640.36-13,351.04

Finding the Fourth Proportional to 19,311.08, 26,640.36 and 13,351.04

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Solution

The fourth proportional to 19,311.08, 26,640.36 and 13,351.04 is: 18,418.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,311.08 : 26,640.36 = 13,351.04 : x
  2. Step 2: Convert to fraction form
    19,311.08/26,640.36 = 13,351.04/x
  3. Step 3: Cross multiply
    19,311.08x = 26,640.36 × 13,351.04
  4. Step 4: Simplify right side
    19,311.08x = 355,676,511.97
  5. Step 5: Solve for x
    x = 355,676,511.97/19,311.08
  6. Step 6: Final answer
    x = 18,418.26

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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.