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Finding the Fourth Proportional to 19,153, 28,739.22 and 8,767.36

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Solution

The fourth proportional to 19,153, 28,739.22 and 8,767.36 is: 13,155.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,153 : 28,739.22 = 8,767.36 : x
  2. Step 2: Convert to fraction form
    19,153/28,739.22 = 8,767.36/x
  3. Step 3: Cross multiply
    19,153x = 28,739.22 × 8,767.36
  4. Step 4: Simplify right side
    19,153x = 251,967,087.86
  5. Step 5: Solve for x
    x = 251,967,087.86/19,153
  6. Step 6: Final answer
    x = 13,155.49

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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.