Home / 11,153.22-15,401.84-7,181.22

Finding the Fourth Proportional to 11,153.22, 15,401.84 and 7,181.22

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Solution

The fourth proportional to 11,153.22, 15,401.84 and 7,181.22 is: 9,916.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.22 : 15,401.84 = 7,181.22 : x
  2. Step 2: Convert to fraction form
    11,153.22/15,401.84 = 7,181.22/x
  3. Step 3: Cross multiply
    11,153.22x = 15,401.84 × 7,181.22
  4. Step 4: Simplify right side
    11,153.22x = 110,603,965.54
  5. Step 5: Solve for x
    x = 110,603,965.54/11,153.22
  6. Step 6: Final answer
    x = 9,916.77

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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.