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Finding the Fourth Proportional to 19,887.66, 29,826.87 and 8,788.29

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Solution

The fourth proportional to 19,887.66, 29,826.87 and 8,788.29 is: 13,180.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,887.66 : 29,826.87 = 8,788.29 : x
  2. Step 2: Convert to fraction form
    19,887.66/29,826.87 = 8,788.29/x
  3. Step 3: Cross multiply
    19,887.66x = 29,826.87 × 8,788.29
  4. Step 4: Simplify right side
    19,887.66x = 262,127,183.35
  5. Step 5: Solve for x
    x = 262,127,183.35/19,887.66
  6. Step 6: Final answer
    x = 13,180.39

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1.5x scale

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.