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Finding the Fourth Proportional to 29,611, 40,857.60 and 18,290.26

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Solution

The fourth proportional to 29,611, 40,857.60 and 18,290.26 is: 25,237.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,611 : 40,857.60 = 18,290.26 : x
  2. Step 2: Convert to fraction form
    29,611/40,857.60 = 18,290.26/x
  3. Step 3: Cross multiply
    29,611x = 40,857.60 × 18,290.26
  4. Step 4: Simplify right side
    29,611x = 747,296,126.98
  5. Step 5: Solve for x
    x = 747,296,126.98/29,611
  6. Step 6: Final answer
    x = 25,237.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.