Home / 28,716.98-39,629.56-15,971.32

Finding the Fourth Proportional to 28,716.98, 39,629.56 and 15,971.32

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Solution

The fourth proportional to 28,716.98, 39,629.56 and 15,971.32 is: 22,040.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,716.98 : 39,629.56 = 15,971.32 : x
  2. Step 2: Convert to fraction form
    28,716.98/39,629.56 = 15,971.32/x
  3. Step 3: Cross multiply
    28,716.98x = 39,629.56 × 15,971.32
  4. Step 4: Simplify right side
    28,716.98x = 632,936,384.22
  5. Step 5: Solve for x
    x = 632,936,384.22/28,716.98
  6. Step 6: Final answer
    x = 22,040.49

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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.