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Finding the Fourth Proportional to 29,318, 43,977 and 7,430

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Solution

The fourth proportional to 29,318, 43,977 and 7,430 is: 11,145

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,318 : 43,977 = 7,430 : x
  2. Step 2: Convert to fraction form
    29,318/43,977 = 7,430/x
  3. Step 3: Cross multiply
    29,318x = 43,977 × 7,430
  4. Step 4: Simplify right side
    29,318x = 326,749,110
  5. Step 5: Solve for x
    x = 326,749,110/29,318
  6. Step 6: Final answer
    x = 11,145

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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.