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Finding the Fourth Proportional to 19,651.21, 29,459.03 and 7,168.31

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Solution

The fourth proportional to 19,651.21, 29,459.03 and 7,168.31 is: 10,745.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,651.21 : 29,459.03 = 7,168.31 : x
  2. Step 2: Convert to fraction form
    19,651.21/29,459.03 = 7,168.31/x
  3. Step 3: Cross multiply
    19,651.21x = 29,459.03 × 7,168.31
  4. Step 4: Simplify right side
    19,651.21x = 211,171,459.34
  5. Step 5: Solve for x
    x = 211,171,459.34/19,651.21
  6. Step 6: Final answer
    x = 10,745.98

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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.