Home / 28,708.07-39,636.47-25,673.78

Finding the Fourth Proportional to 28,708.07, 39,636.47 and 25,673.78

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Solution

The fourth proportional to 28,708.07, 39,636.47 and 25,673.78 is: 35,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,708.07 : 39,636.47 = 25,673.78 : x
  2. Step 2: Convert to fraction form
    28,708.07/39,636.47 = 25,673.78/x
  3. Step 3: Cross multiply
    28,708.07x = 39,636.47 × 25,673.78
  4. Step 4: Simplify right side
    28,708.07x = 1,017,617,684.21
  5. Step 5: Solve for x
    x = 1,017,617,684.21/28,708.07
  6. Step 6: Final answer
    x = 35,447.10

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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.