Home / 12,782.88-19,158.08-5,755.36

Finding the Fourth Proportional to 12,782.88, 19,158.08 and 5,755.36

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Solution

The fourth proportional to 12,782.88, 19,158.08 and 5,755.36 is: 8,625.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,782.88 : 19,158.08 = 5,755.36 : x
  2. Step 2: Convert to fraction form
    12,782.88/19,158.08 = 5,755.36/x
  3. Step 3: Cross multiply
    12,782.88x = 19,158.08 × 5,755.36
  4. Step 4: Simplify right side
    12,782.88x = 110,261,647.31
  5. Step 5: Solve for x
    x = 110,261,647.31/12,782.88
  6. Step 6: Final answer
    x = 8,625.73

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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.