Home / 11,181.88-15,420.39-7,346.77

Finding the Fourth Proportional to 11,181.88, 15,420.39 and 7,346.77

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Solution

The fourth proportional to 11,181.88, 15,420.39 and 7,346.77 is: 10,131.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,181.88 : 15,420.39 = 7,346.77 : x
  2. Step 2: Convert to fraction form
    11,181.88/15,420.39 = 7,346.77/x
  3. Step 3: Cross multiply
    11,181.88x = 15,420.39 × 7,346.77
  4. Step 4: Simplify right side
    11,181.88x = 113,289,981.54
  5. Step 5: Solve for x
    x = 113,289,981.54/11,181.88
  6. Step 6: Final answer
    x = 10,131.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.