Home / 28,778.40-43,081.20-17,085.60

Finding the Fourth Proportional to 28,778.40, 43,081.20 and 17,085.60

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Solution

The fourth proportional to 28,778.40, 43,081.20 and 17,085.60 is: 25,577.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.40 : 43,081.20 = 17,085.60 : x
  2. Step 2: Convert to fraction form
    28,778.40/43,081.20 = 17,085.60/x
  3. Step 3: Cross multiply
    28,778.40x = 43,081.20 × 17,085.60
  4. Step 4: Simplify right side
    28,778.40x = 736,068,150.72
  5. Step 5: Solve for x
    x = 736,068,150.72/28,778.40
  6. Step 6: Final answer
    x = 25,577.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.