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Finding the Fourth Proportional to 38,463.60, 53,080.16 and 21,469.44

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Solution

The fourth proportional to 38,463.60, 53,080.16 and 21,469.44 is: 29,628.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,463.60 : 53,080.16 = 21,469.44 : x
  2. Step 2: Convert to fraction form
    38,463.60/53,080.16 = 21,469.44/x
  3. Step 3: Cross multiply
    38,463.60x = 53,080.16 × 21,469.44
  4. Step 4: Simplify right side
    38,463.60x = 1,139,601,310.31
  5. Step 5: Solve for x
    x = 1,139,601,310.31/38,463.60
  6. Step 6: Final answer
    x = 29,628.05

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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.