Home / 11,161.60-15,394.89-7,388.00

Finding the Fourth Proportional to 11,161.60, 15,394.89 and 7,388.00

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Solution

The fourth proportional to 11,161.60, 15,394.89 and 7,388.00 is: 10,190.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.60 : 15,394.89 = 7,388.00 : x
  2. Step 2: Convert to fraction form
    11,161.60/15,394.89 = 7,388.00/x
  3. Step 3: Cross multiply
    11,161.60x = 15,394.89 × 7,388.00
  4. Step 4: Simplify right side
    11,161.60x = 113,737,371.80
  5. Step 5: Solve for x
    x = 113,737,371.80/11,161.60
  6. Step 6: Final answer
    x = 10,190.06

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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.