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Finding the Fourth Proportional to 14,013.69, 20,994.89 and 11,018.18

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Solution

The fourth proportional to 14,013.69, 20,994.89 and 11,018.18 is: 16,507.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,013.69 : 20,994.89 = 11,018.18 : x
  2. Step 2: Convert to fraction form
    14,013.69/20,994.89 = 11,018.18/x
  3. Step 3: Cross multiply
    14,013.69x = 20,994.89 × 11,018.18
  4. Step 4: Simplify right side
    14,013.69x = 231,325,477.10
  5. Step 5: Solve for x
    x = 231,325,477.10/14,013.69
  6. Step 6: Final answer
    x = 16,507.11

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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.