Home / 15,745.36-21,708.42-12,902.26

Finding the Fourth Proportional to 15,745.36, 21,708.42 and 12,902.26

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Solution

The fourth proportional to 15,745.36, 21,708.42 and 12,902.26 is: 17,788.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,745.36 : 21,708.42 = 12,902.26 : x
  2. Step 2: Convert to fraction form
    15,745.36/21,708.42 = 12,902.26/x
  3. Step 3: Cross multiply
    15,745.36x = 21,708.42 × 12,902.26
  4. Step 4: Simplify right side
    15,745.36x = 280,087,679.03
  5. Step 5: Solve for x
    x = 280,087,679.03/15,745.36
  6. Step 6: Final answer
    x = 17,788.59

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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.