Home / 28,718.26-39,629.94-15,971.38

Finding the Fourth Proportional to 28,718.26, 39,629.94 and 15,971.38

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Solution

The fourth proportional to 28,718.26, 39,629.94 and 15,971.38 is: 22,039.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.26 : 39,629.94 = 15,971.38 : x
  2. Step 2: Convert to fraction form
    28,718.26/39,629.94 = 15,971.38/x
  3. Step 3: Cross multiply
    28,718.26x = 39,629.94 × 15,971.38
  4. Step 4: Simplify right side
    28,718.26x = 632,944,831.12
  5. Step 5: Solve for x
    x = 632,944,831.12/28,718.26
  6. Step 6: Final answer
    x = 22,039.80

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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.