Home / 43,156.80-64,736.16-11,991.84

Finding the Fourth Proportional to 43,156.80, 64,736.16 and 11,991.84

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Solution

The fourth proportional to 43,156.80, 64,736.16 and 11,991.84 is: 17,988.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,156.80 : 64,736.16 = 11,991.84 : x
  2. Step 2: Convert to fraction form
    43,156.80/64,736.16 = 11,991.84/x
  3. Step 3: Cross multiply
    43,156.80x = 64,736.16 × 11,991.84
  4. Step 4: Simplify right side
    43,156.80x = 776,305,672.93
  5. Step 5: Solve for x
    x = 776,305,672.93/43,156.80
  6. Step 6: Final answer
    x = 17,988.03

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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.