Home / 28,433.68-39,238.38-15,858.42

Finding the Fourth Proportional to 28,433.68, 39,238.38 and 15,858.42

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Solution

The fourth proportional to 28,433.68, 39,238.38 and 15,858.42 is: 21,884.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,433.68 : 39,238.38 = 15,858.42 : x
  2. Step 2: Convert to fraction form
    28,433.68/39,238.38 = 15,858.42/x
  3. Step 3: Cross multiply
    28,433.68x = 39,238.38 × 15,858.42
  4. Step 4: Simplify right side
    28,433.68x = 622,258,710.16
  5. Step 5: Solve for x
    x = 622,258,710.16/28,433.68
  6. Step 6: Final answer
    x = 21,884.56

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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.