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Finding the Fourth Proportional to 26,885.80, 40,336.80 and 19,109.80

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Solution

The fourth proportional to 26,885.80, 40,336.80 and 19,109.80 is: 28,670.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,885.80 : 40,336.80 = 19,109.80 : x
  2. Step 2: Convert to fraction form
    26,885.80/40,336.80 = 19,109.80/x
  3. Step 3: Cross multiply
    26,885.80x = 40,336.80 × 19,109.80
  4. Step 4: Simplify right side
    26,885.80x = 770,828,180.64
  5. Step 5: Solve for x
    x = 770,828,180.64/26,885.80
  6. Step 6: Final answer
    x = 28,670.46

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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.