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Finding the Fourth Proportional to 18,503.68, 27,595.28 and 16,421.44

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Solution

The fourth proportional to 18,503.68, 27,595.28 and 16,421.44 is: 24,489.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,503.68 : 27,595.28 = 16,421.44 : x
  2. Step 2: Convert to fraction form
    18,503.68/27,595.28 = 16,421.44/x
  3. Step 3: Cross multiply
    18,503.68x = 27,595.28 × 16,421.44
  4. Step 4: Simplify right side
    18,503.68x = 453,154,234.80
  5. Step 5: Solve for x
    x = 453,154,234.80/18,503.68
  6. Step 6: Final answer
    x = 24,489.95

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.