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Finding the Fourth Proportional to 29,445.45, 40,631.03 and 19,906.09

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Solution

The fourth proportional to 29,445.45, 40,631.03 and 19,906.09 is: 27,467.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,445.45 : 40,631.03 = 19,906.09 : x
  2. Step 2: Convert to fraction form
    29,445.45/40,631.03 = 19,906.09/x
  3. Step 3: Cross multiply
    29,445.45x = 40,631.03 × 19,906.09
  4. Step 4: Simplify right side
    29,445.45x = 808,804,738.86
  5. Step 5: Solve for x
    x = 808,804,738.86/29,445.45
  6. Step 6: Final answer
    x = 27,467.90

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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.