Home / 11,440.40-17,164.55-4,780.45

Finding the Fourth Proportional to 11,440.40, 17,164.55 and 4,780.45

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Solution

The fourth proportional to 11,440.40, 17,164.55 and 4,780.45 is: 7,172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,440.40 : 17,164.55 = 4,780.45 : x
  2. Step 2: Convert to fraction form
    11,440.40/17,164.55 = 4,780.45/x
  3. Step 3: Cross multiply
    11,440.40x = 17,164.55 × 4,780.45
  4. Step 4: Simplify right side
    11,440.40x = 82,054,273.05
  5. Step 5: Solve for x
    x = 82,054,273.05/11,440.40
  6. Step 6: Final answer
    x = 7,172.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.