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Finding the Fourth Proportional to 29,180.00, 40,219.99 and 20,671.22

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Solution

The fourth proportional to 29,180.00, 40,219.99 and 20,671.22 is: 28,491.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,180.00 : 40,219.99 = 20,671.22 : x
  2. Step 2: Convert to fraction form
    29,180.00/40,219.99 = 20,671.22/x
  3. Step 3: Cross multiply
    29,180.00x = 40,219.99 × 20,671.22
  4. Step 4: Simplify right side
    29,180.00x = 831,396,310.56
  5. Step 5: Solve for x
    x = 831,396,310.56/29,180.00
  6. Step 6: Final answer
    x = 28,491.99

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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.