Home / 28,609.25-39,483.09-15,863.70

Finding the Fourth Proportional to 28,609.25, 39,483.09 and 15,863.70

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Solution

The fourth proportional to 28,609.25, 39,483.09 and 15,863.70 is: 21,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,609.25 : 39,483.09 = 15,863.70 : x
  2. Step 2: Convert to fraction form
    28,609.25/39,483.09 = 15,863.70/x
  3. Step 3: Cross multiply
    28,609.25x = 39,483.09 × 15,863.70
  4. Step 4: Simplify right side
    28,609.25x = 626,347,894.83
  5. Step 5: Solve for x
    x = 626,347,894.83/28,609.25
  6. Step 6: Final answer
    x = 21,893.20

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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.