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Finding the Fourth Proportional to 19,249, 28,885.02 and 8,305

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Solution

The fourth proportional to 19,249, 28,885.02 and 8,305 is: 12,462.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,249 : 28,885.02 = 8,305 : x
  2. Step 2: Convert to fraction form
    19,249/28,885.02 = 8,305/x
  3. Step 3: Cross multiply
    19,249x = 28,885.02 × 8,305
  4. Step 4: Simplify right side
    19,249x = 239,890,091.10
  5. Step 5: Solve for x
    x = 239,890,091.10/19,249
  6. Step 6: Final answer
    x = 12,462.47

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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.