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Finding the Fourth Proportional to 28,784, 39,722.04 and 16,208.96

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Solution

The fourth proportional to 28,784, 39,722.04 and 16,208.96 is: 22,368.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,784 : 39,722.04 = 16,208.96 : x
  2. Step 2: Convert to fraction form
    28,784/39,722.04 = 16,208.96/x
  3. Step 3: Cross multiply
    28,784x = 39,722.04 × 16,208.96
  4. Step 4: Simplify right side
    28,784x = 643,852,957.48
  5. Step 5: Solve for x
    x = 643,852,957.48/28,784
  6. Step 6: Final answer
    x = 22,368.43

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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.