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Finding the Fourth Proportional to 19,478.26, 29,188.23 and 18,020.26

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Solution

The fourth proportional to 19,478.26, 29,188.23 and 18,020.26 is: 27,003.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,478.26 : 29,188.23 = 18,020.26 : x
  2. Step 2: Convert to fraction form
    19,478.26/29,188.23 = 18,020.26/x
  3. Step 3: Cross multiply
    19,478.26x = 29,188.23 × 18,020.26
  4. Step 4: Simplify right side
    19,478.26x = 525,979,493.54
  5. Step 5: Solve for x
    x = 525,979,493.54/19,478.26
  6. Step 6: Final answer
    x = 27,003.41

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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.