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Finding the Fourth Proportional to 40,893.21, 61,311.09 and 15,912.21

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Solution

The fourth proportional to 40,893.21, 61,311.09 and 15,912.21 is: 23,857.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,893.21 : 61,311.09 = 15,912.21 : x
  2. Step 2: Convert to fraction form
    40,893.21/61,311.09 = 15,912.21/x
  3. Step 3: Cross multiply
    40,893.21x = 61,311.09 × 15,912.21
  4. Step 4: Simplify right side
    40,893.21x = 975,594,939.41
  5. Step 5: Solve for x
    x = 975,594,939.41/40,893.21
  6. Step 6: Final answer
    x = 23,857.14

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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.