Home / 13,415.72-18,522.66-11,994.80

Finding the Fourth Proportional to 13,415.72, 18,522.66 and 11,994.80

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Solution

The fourth proportional to 13,415.72, 18,522.66 and 11,994.80 is: 16,560.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.72 : 18,522.66 = 11,994.80 : x
  2. Step 2: Convert to fraction form
    13,415.72/18,522.66 = 11,994.80/x
  3. Step 3: Cross multiply
    13,415.72x = 18,522.66 × 11,994.80
  4. Step 4: Simplify right side
    13,415.72x = 222,175,602.17
  5. Step 5: Solve for x
    x = 222,175,602.17/13,415.72
  6. Step 6: Final answer
    x = 16,560.84

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1.5x scale

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.