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Finding the Fourth Proportional to 26,939.40, 40,409.10 and 17,608.20

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Solution

The fourth proportional to 26,939.40, 40,409.10 and 17,608.20 is: 26,412.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,939.40 : 40,409.10 = 17,608.20 : x
  2. Step 2: Convert to fraction form
    26,939.40/40,409.10 = 17,608.20/x
  3. Step 3: Cross multiply
    26,939.40x = 40,409.10 × 17,608.20
  4. Step 4: Simplify right side
    26,939.40x = 711,531,514.62
  5. Step 5: Solve for x
    x = 711,531,514.62/26,939.40
  6. Step 6: Final answer
    x = 26,412.30

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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.