Home / 28,556.36-39,408.30-15,981.08

Finding the Fourth Proportional to 28,556.36, 39,408.30 and 15,981.08

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Solution

The fourth proportional to 28,556.36, 39,408.30 and 15,981.08 is: 22,054.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.36 : 39,408.30 = 15,981.08 : x
  2. Step 2: Convert to fraction form
    28,556.36/39,408.30 = 15,981.08/x
  3. Step 3: Cross multiply
    28,556.36x = 39,408.30 × 15,981.08
  4. Step 4: Simplify right side
    28,556.36x = 629,787,194.96
  5. Step 5: Solve for x
    x = 629,787,194.96/28,556.36
  6. Step 6: Final answer
    x = 22,054.18

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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.