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Finding the Fourth Proportional to 14,018.10, 20,998.80 and 8,736.90

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Solution

The fourth proportional to 14,018.10, 20,998.80 and 8,736.90 is: 13,087.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,018.10 : 20,998.80 = 8,736.90 : x
  2. Step 2: Convert to fraction form
    14,018.10/20,998.80 = 8,736.90/x
  3. Step 3: Cross multiply
    14,018.10x = 20,998.80 × 8,736.90
  4. Step 4: Simplify right side
    14,018.10x = 183,464,415.72
  5. Step 5: Solve for x
    x = 183,464,415.72/14,018.10
  6. Step 6: Final answer
    x = 13,087.68

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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.