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Finding the Fourth Proportional to 18,573.48, 27,845.64 and 9,678.42

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Solution

The fourth proportional to 18,573.48, 27,845.64 and 9,678.42 is: 14,510.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,573.48 : 27,845.64 = 9,678.42 : x
  2. Step 2: Convert to fraction form
    18,573.48/27,845.64 = 9,678.42/x
  3. Step 3: Cross multiply
    18,573.48x = 27,845.64 × 9,678.42
  4. Step 4: Simplify right side
    18,573.48x = 269,501,799.09
  5. Step 5: Solve for x
    x = 269,501,799.09/18,573.48
  6. Step 6: Final answer
    x = 14,510.03

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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.