Home / 20,101.98-30,128.75-7,441.62

Finding the Fourth Proportional to 20,101.98, 30,128.75 and 7,441.62

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Solution

The fourth proportional to 20,101.98, 30,128.75 and 7,441.62 is: 11,153.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.98 : 30,128.75 = 7,441.62 : x
  2. Step 2: Convert to fraction form
    20,101.98/30,128.75 = 7,441.62/x
  3. Step 3: Cross multiply
    20,101.98x = 30,128.75 × 7,441.62
  4. Step 4: Simplify right side
    20,101.98x = 224,206,708.58
  5. Step 5: Solve for x
    x = 224,206,708.58/20,101.98
  6. Step 6: Final answer
    x = 11,153.46

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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.