Home / 19,135.20-28,662.48-8,755.68

Finding the Fourth Proportional to 19,135.20, 28,662.48 and 8,755.68

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Solution

The fourth proportional to 19,135.20, 28,662.48 and 8,755.68 is: 13,115.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,135.20 : 28,662.48 = 8,755.68 : x
  2. Step 2: Convert to fraction form
    19,135.20/28,662.48 = 8,755.68/x
  3. Step 3: Cross multiply
    19,135.20x = 28,662.48 × 8,755.68
  4. Step 4: Simplify right side
    19,135.20x = 250,959,502.89
  5. Step 5: Solve for x
    x = 250,959,502.89/19,135.20
  6. Step 6: Final answer
    x = 13,115.07

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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.