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Finding the Fourth Proportional to 19,209.48, 28,813.68 and 10,461.48

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Solution

The fourth proportional to 19,209.48, 28,813.68 and 10,461.48 is: 15,691.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.48 : 28,813.68 = 10,461.48 : x
  2. Step 2: Convert to fraction form
    19,209.48/28,813.68 = 10,461.48/x
  3. Step 3: Cross multiply
    19,209.48x = 28,813.68 × 10,461.48
  4. Step 4: Simplify right side
    19,209.48x = 301,433,737.05
  5. Step 5: Solve for x
    x = 301,433,737.05/19,209.48
  6. Step 6: Final answer
    x = 15,691.93

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.