Home / 28,540.40-39,386.68-15,965.04

Finding the Fourth Proportional to 28,540.40, 39,386.68 and 15,965.04

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Solution

The fourth proportional to 28,540.40, 39,386.68 and 15,965.04 is: 22,032.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,540.40 : 39,386.68 = 15,965.04 : x
  2. Step 2: Convert to fraction form
    28,540.40/39,386.68 = 15,965.04/x
  3. Step 3: Cross multiply
    28,540.40x = 39,386.68 × 15,965.04
  4. Step 4: Simplify right side
    28,540.40x = 628,809,921.67
  5. Step 5: Solve for x
    x = 628,809,921.67/28,540.40
  6. Step 6: Final answer
    x = 22,032.27

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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.