Home / 12,755.31-19,138.41-7,200.33

Finding the Fourth Proportional to 12,755.31, 19,138.41 and 7,200.33

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Solution

The fourth proportional to 12,755.31, 19,138.41 and 7,200.33 is: 10,803.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.31 : 19,138.41 = 7,200.33 : x
  2. Step 2: Convert to fraction form
    12,755.31/19,138.41 = 7,200.33/x
  3. Step 3: Cross multiply
    12,755.31x = 19,138.41 × 7,200.33
  4. Step 4: Simplify right side
    12,755.31x = 137,802,795.91
  5. Step 5: Solve for x
    x = 137,802,795.91/12,755.31
  6. Step 6: Final answer
    x = 10,803.57

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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.