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Finding the Fourth Proportional to 19,932.96, 27,477.42 and 16,390.02

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Solution

The fourth proportional to 19,932.96, 27,477.42 and 16,390.02 is: 22,593.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,932.96 : 27,477.42 = 16,390.02 : x
  2. Step 2: Convert to fraction form
    19,932.96/27,477.42 = 16,390.02/x
  3. Step 3: Cross multiply
    19,932.96x = 27,477.42 × 16,390.02
  4. Step 4: Simplify right side
    19,932.96x = 450,355,463.35
  5. Step 5: Solve for x
    x = 450,355,463.35/19,932.96
  6. Step 6: Final answer
    x = 22,593.51

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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.