Home / 26,415.20-39,579.60-19,416.80

Finding the Fourth Proportional to 26,415.20, 39,579.60 and 19,416.80

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Solution

The fourth proportional to 26,415.20, 39,579.60 and 19,416.80 is: 29,093.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,415.20 : 39,579.60 = 19,416.80 : x
  2. Step 2: Convert to fraction form
    26,415.20/39,579.60 = 19,416.80/x
  3. Step 3: Cross multiply
    26,415.20x = 39,579.60 × 19,416.80
  4. Step 4: Simplify right side
    26,415.20x = 768,509,177.28
  5. Step 5: Solve for x
    x = 768,509,177.28/26,415.20
  6. Step 6: Final answer
    x = 29,093.45

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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.