Home / 11,147.77-15,381.40-7,563.22

Finding the Fourth Proportional to 11,147.77, 15,381.40 and 7,563.22

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Solution

The fourth proportional to 11,147.77, 15,381.40 and 7,563.22 is: 10,435.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.77 : 15,381.40 = 7,563.22 : x
  2. Step 2: Convert to fraction form
    11,147.77/15,381.40 = 7,563.22/x
  3. Step 3: Cross multiply
    11,147.77x = 15,381.40 × 7,563.22
  4. Step 4: Simplify right side
    11,147.77x = 116,332,912.11
  5. Step 5: Solve for x
    x = 116,332,912.11/11,147.77
  6. Step 6: Final answer
    x = 10,435.53

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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.