Home / 43,157.04-64,736.40-11,991.84

Finding the Fourth Proportional to 43,157.04, 64,736.40 and 11,991.84

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Solution

The fourth proportional to 43,157.04, 64,736.40 and 11,991.84 is: 17,987.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,157.04 : 64,736.40 = 11,991.84 : x
  2. Step 2: Convert to fraction form
    43,157.04/64,736.40 = 11,991.84/x
  3. Step 3: Cross multiply
    43,157.04x = 64,736.40 × 11,991.84
  4. Step 4: Simplify right side
    43,157.04x = 776,308,550.98
  5. Step 5: Solve for x
    x = 776,308,550.98/43,157.04
  6. Step 6: Final answer
    x = 17,987.99

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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.