Home / 11,153.03-15,401.57-7,181.06

Finding the Fourth Proportional to 11,153.03, 15,401.57 and 7,181.06

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Solution

The fourth proportional to 11,153.03, 15,401.57 and 7,181.06 is: 9,916.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.03 : 15,401.57 = 7,181.06 : x
  2. Step 2: Convert to fraction form
    11,153.03/15,401.57 = 7,181.06/x
  3. Step 3: Cross multiply
    11,153.03x = 15,401.57 × 7,181.06
  4. Step 4: Simplify right side
    11,153.03x = 110,599,485.35
  5. Step 5: Solve for x
    x = 110,599,485.35/11,153.03
  6. Step 6: Final answer
    x = 9,916.55

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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.