Home / 28,709.78-39,621.60-15,965.25

Finding the Fourth Proportional to 28,709.78, 39,621.60 and 15,965.25

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Solution

The fourth proportional to 28,709.78, 39,621.60 and 15,965.25 is: 22,033.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,709.78 : 39,621.60 = 15,965.25 : x
  2. Step 2: Convert to fraction form
    28,709.78/39,621.60 = 15,965.25/x
  3. Step 3: Cross multiply
    28,709.78x = 39,621.60 × 15,965.25
  4. Step 4: Simplify right side
    28,709.78x = 632,568,749.40
  5. Step 5: Solve for x
    x = 632,568,749.40/28,709.78
  6. Step 6: Final answer
    x = 22,033.22

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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.