Home / 12,777.75-19,159.34-5,755.05

Finding the Fourth Proportional to 12,777.75, 19,159.34 and 5,755.05

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Solution

The fourth proportional to 12,777.75, 19,159.34 and 5,755.05 is: 8,629.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.75 : 19,159.34 = 5,755.05 : x
  2. Step 2: Convert to fraction form
    12,777.75/19,159.34 = 5,755.05/x
  3. Step 3: Cross multiply
    12,777.75x = 19,159.34 × 5,755.05
  4. Step 4: Simplify right side
    12,777.75x = 110,262,930.89
  5. Step 5: Solve for x
    x = 110,262,930.89/12,777.75
  6. Step 6: Final answer
    x = 8,629.29

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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.