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Finding the Fourth Proportional to 19,253, 28,891.02 and 8,309

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Solution

The fourth proportional to 19,253, 28,891.02 and 8,309 is: 12,468.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,253 : 28,891.02 = 8,309 : x
  2. Step 2: Convert to fraction form
    19,253/28,891.02 = 8,309/x
  3. Step 3: Cross multiply
    19,253x = 28,891.02 × 8,309
  4. Step 4: Simplify right side
    19,253x = 240,055,485.18
  5. Step 5: Solve for x
    x = 240,055,485.18/19,253
  6. Step 6: Final answer
    x = 12,468.47

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Why These Related Problems?

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