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Finding the Fourth Proportional to 12,604.79, 18,918.11 and 12,575.63

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Solution

The fourth proportional to 12,604.79, 18,918.11 and 12,575.63 is: 18,874.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,604.79 : 18,918.11 = 12,575.63 : x
  2. Step 2: Convert to fraction form
    12,604.79/18,918.11 = 12,575.63/x
  3. Step 3: Cross multiply
    12,604.79x = 18,918.11 × 12,575.63
  4. Step 4: Simplify right side
    12,604.79x = 237,907,151.66
  5. Step 5: Solve for x
    x = 237,907,151.66/12,604.79
  6. Step 6: Final answer
    x = 18,874.34

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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.