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Finding the Fourth Proportional to 12,755.88, 19,135.21 and 4,328.47

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Solution

The fourth proportional to 12,755.88, 19,135.21 and 4,328.47 is: 6,493.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.88 : 19,135.21 = 4,328.47 : x
  2. Step 2: Convert to fraction form
    12,755.88/19,135.21 = 4,328.47/x
  3. Step 3: Cross multiply
    12,755.88x = 19,135.21 × 4,328.47
  4. Step 4: Simplify right side
    12,755.88x = 82,826,182.43
  5. Step 5: Solve for x
    x = 82,826,182.43/12,755.88
  6. Step 6: Final answer
    x = 6,493.18

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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.