Home / 28,515.51-39,351.27-15,940.26

Finding the Fourth Proportional to 28,515.51, 39,351.27 and 15,940.26

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Solution

The fourth proportional to 28,515.51, 39,351.27 and 15,940.26 is: 21,997.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.51 : 39,351.27 = 15,940.26 : x
  2. Step 2: Convert to fraction form
    28,515.51/39,351.27 = 15,940.26/x
  3. Step 3: Cross multiply
    28,515.51x = 39,351.27 × 15,940.26
  4. Step 4: Simplify right side
    28,515.51x = 627,269,475.13
  5. Step 5: Solve for x
    x = 627,269,475.13/28,515.51
  6. Step 6: Final answer
    x = 21,997.48

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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.