Home / 28,629.84-39,509.52-15,883.26

Finding the Fourth Proportional to 28,629.84, 39,509.52 and 15,883.26

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Solution

The fourth proportional to 28,629.84, 39,509.52 and 15,883.26 is: 21,919.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.84 : 39,509.52 = 15,883.26 : x
  2. Step 2: Convert to fraction form
    28,629.84/39,509.52 = 15,883.26/x
  3. Step 3: Cross multiply
    28,629.84x = 39,509.52 × 15,883.26
  4. Step 4: Simplify right side
    28,629.84x = 627,539,978.64
  5. Step 5: Solve for x
    x = 627,539,978.64/28,629.84
  6. Step 6: Final answer
    x = 21,919.09

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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.