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Finding the Fourth Proportional to 12,676.56, 19,018.64 and 8,985.88

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Solution

The fourth proportional to 12,676.56, 19,018.64 and 8,985.88 is: 13,481.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,676.56 : 19,018.64 = 8,985.88 : x
  2. Step 2: Convert to fraction form
    12,676.56/19,018.64 = 8,985.88/x
  3. Step 3: Cross multiply
    12,676.56x = 19,018.64 × 8,985.88
  4. Step 4: Simplify right side
    12,676.56x = 170,899,216.80
  5. Step 5: Solve for x
    x = 170,899,216.80/12,676.56
  6. Step 6: Final answer
    x = 13,481.51

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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.