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Finding the Fourth Proportional to 13,590.60, 18,755.83 and 7,622.60

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Solution

The fourth proportional to 13,590.60, 18,755.83 and 7,622.60 is: 10,519.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.60 : 18,755.83 = 7,622.60 : x
  2. Step 2: Convert to fraction form
    13,590.60/18,755.83 = 7,622.60/x
  3. Step 3: Cross multiply
    13,590.60x = 18,755.83 × 7,622.60
  4. Step 4: Simplify right side
    13,590.60x = 142,968,175.84
  5. Step 5: Solve for x
    x = 142,968,175.84/13,590.60
  6. Step 6: Final answer
    x = 10,519.64

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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.