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Finding the Fourth Proportional to 19,256.52, 28,878.90 and 8,163

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Solution

The fourth proportional to 19,256.52, 28,878.90 and 8,163 is: 12,242.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,256.52 : 28,878.90 = 8,163 : x
  2. Step 2: Convert to fraction form
    19,256.52/28,878.90 = 8,163/x
  3. Step 3: Cross multiply
    19,256.52x = 28,878.90 × 8,163
  4. Step 4: Simplify right side
    19,256.52x = 235,738,460.70
  5. Step 5: Solve for x
    x = 235,738,460.70/19,256.52
  6. Step 6: Final answer
    x = 12,242.01

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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.