Home / 28,736.43-39,633.78-19,667.16

Finding the Fourth Proportional to 28,736.43, 39,633.78 and 19,667.16

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Solution

The fourth proportional to 28,736.43, 39,633.78 and 19,667.16 is: 27,125.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,736.43 : 39,633.78 = 19,667.16 : x
  2. Step 2: Convert to fraction form
    28,736.43/39,633.78 = 19,667.16/x
  3. Step 3: Cross multiply
    28,736.43x = 39,633.78 × 19,667.16
  4. Step 4: Simplify right side
    28,736.43x = 779,483,794.33
  5. Step 5: Solve for x
    x = 779,483,794.33/28,736.43
  6. Step 6: Final answer
    x = 27,125.28

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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.