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Finding the Fourth Proportional to 18,930, 26,123.40 and 10,548.48

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Solution

The fourth proportional to 18,930, 26,123.40 and 10,548.48 is: 14,556.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930 : 26,123.40 = 10,548.48 : x
  2. Step 2: Convert to fraction form
    18,930/26,123.40 = 10,548.48/x
  3. Step 3: Cross multiply
    18,930x = 26,123.40 × 10,548.48
  4. Step 4: Simplify right side
    18,930x = 275,562,162.43
  5. Step 5: Solve for x
    x = 275,562,162.43/18,930
  6. Step 6: Final answer
    x = 14,556.90

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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.