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Finding the Fourth Proportional to 19,255.98, 28,856.43 and 8,699.79

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Solution

The fourth proportional to 19,255.98, 28,856.43 and 8,699.79 is: 13,037.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,255.98 : 28,856.43 = 8,699.79 : x
  2. Step 2: Convert to fraction form
    19,255.98/28,856.43 = 8,699.79/x
  3. Step 3: Cross multiply
    19,255.98x = 28,856.43 × 8,699.79
  4. Step 4: Simplify right side
    19,255.98x = 251,044,881.15
  5. Step 5: Solve for x
    x = 251,044,881.15/19,255.98
  6. Step 6: Final answer
    x = 13,037.24

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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.