Home / 28,791.15-39,716.60-19,823.08

Finding the Fourth Proportional to 28,791.15, 39,716.60 and 19,823.08

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Solution

The fourth proportional to 28,791.15, 39,716.60 and 19,823.08 is: 27,345.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,791.15 : 39,716.60 = 19,823.08 : x
  2. Step 2: Convert to fraction form
    28,791.15/39,716.60 = 19,823.08/x
  3. Step 3: Cross multiply
    28,791.15x = 39,716.60 × 19,823.08
  4. Step 4: Simplify right side
    28,791.15x = 787,305,382.45
  5. Step 5: Solve for x
    x = 787,305,382.45/28,791.15
  6. Step 6: Final answer
    x = 27,345.40

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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.