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Finding the Fourth Proportional to 26,820.80, 40,192.80 and 19,745.60

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Solution

The fourth proportional to 26,820.80, 40,192.80 and 19,745.60 is: 29,590.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,820.80 : 40,192.80 = 19,745.60 : x
  2. Step 2: Convert to fraction form
    26,820.80/40,192.80 = 19,745.60/x
  3. Step 3: Cross multiply
    26,820.80x = 40,192.80 × 19,745.60
  4. Step 4: Simplify right side
    26,820.80x = 793,630,951.68
  5. Step 5: Solve for x
    x = 793,630,951.68/26,820.80
  6. Step 6: Final answer
    x = 29,590.13

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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.