Home / 11,428.19-15,735.84-10,003.91

Finding the Fourth Proportional to 11,428.19, 15,735.84 and 10,003.91

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Solution

The fourth proportional to 11,428.19, 15,735.84 and 10,003.91 is: 13,774.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,428.19 : 15,735.84 = 10,003.91 : x
  2. Step 2: Convert to fraction form
    11,428.19/15,735.84 = 10,003.91/x
  3. Step 3: Cross multiply
    11,428.19x = 15,735.84 × 10,003.91
  4. Step 4: Simplify right side
    11,428.19x = 157,419,912.80
  5. Step 5: Solve for x
    x = 157,419,912.80/11,428.19
  6. Step 6: Final answer
    x = 13,774.70

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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.