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Finding the Fourth Proportional to 29,109.48, 43,664.34 and 12,455.48

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Solution

The fourth proportional to 29,109.48, 43,664.34 and 12,455.48 is: 18,683.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,109.48 : 43,664.34 = 12,455.48 : x
  2. Step 2: Convert to fraction form
    29,109.48/43,664.34 = 12,455.48/x
  3. Step 3: Cross multiply
    29,109.48x = 43,664.34 × 12,455.48
  4. Step 4: Simplify right side
    29,109.48x = 543,860,313.58
  5. Step 5: Solve for x
    x = 543,860,313.58/29,109.48
  6. Step 6: Final answer
    x = 18,683.27

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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.