Home / 28,639.77-39,514.80-18,568.63

Finding the Fourth Proportional to 28,639.77, 39,514.80 and 18,568.63

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Solution

The fourth proportional to 28,639.77, 39,514.80 and 18,568.63 is: 25,619.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.77 : 39,514.80 = 18,568.63 : x
  2. Step 2: Convert to fraction form
    28,639.77/39,514.80 = 18,568.63/x
  3. Step 3: Cross multiply
    28,639.77x = 39,514.80 × 18,568.63
  4. Step 4: Simplify right side
    28,639.77x = 733,735,700.72
  5. Step 5: Solve for x
    x = 733,735,700.72/28,639.77
  6. Step 6: Final answer
    x = 25,619.47

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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.