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Finding the Fourth Proportional to 22,072.59, 30,439.99 and 16,421.49

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Solution

The fourth proportional to 22,072.59, 30,439.99 and 16,421.49 is: 22,646.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,072.59 : 30,439.99 = 16,421.49 : x
  2. Step 2: Convert to fraction form
    22,072.59/30,439.99 = 16,421.49/x
  3. Step 3: Cross multiply
    22,072.59x = 30,439.99 × 16,421.49
  4. Step 4: Simplify right side
    22,072.59x = 499,869,798.13
  5. Step 5: Solve for x
    x = 499,869,798.13/22,072.59
  6. Step 6: Final answer
    x = 22,646.64

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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.