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Finding the Fourth Proportional to 22,366.36, 30,867.42 and 13,991.32

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Solution

The fourth proportional to 22,366.36, 30,867.42 and 13,991.32 is: 19,309.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,366.36 : 30,867.42 = 13,991.32 : x
  2. Step 2: Convert to fraction form
    22,366.36/30,867.42 = 13,991.32/x
  3. Step 3: Cross multiply
    22,366.36x = 30,867.42 × 13,991.32
  4. Step 4: Simplify right side
    22,366.36x = 431,875,950.79
  5. Step 5: Solve for x
    x = 431,875,950.79/22,366.36
  6. Step 6: Final answer
    x = 19,309.17

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.