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Finding the Fourth Proportional to 43,243.14, 64,866.64 and 13,255.22

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Solution

The fourth proportional to 43,243.14, 64,866.64 and 13,255.22 is: 19,883.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,243.14 : 64,866.64 = 13,255.22 : x
  2. Step 2: Convert to fraction form
    43,243.14/64,866.64 = 13,255.22/x
  3. Step 3: Cross multiply
    43,243.14x = 64,866.64 × 13,255.22
  4. Step 4: Simplify right side
    43,243.14x = 859,821,583.86
  5. Step 5: Solve for x
    x = 859,821,583.86/43,243.14
  6. Step 6: Final answer
    x = 19,883.42

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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.