Home / 20,100.35-30,152.86-7,629.69

Finding the Fourth Proportional to 20,100.35, 30,152.86 and 7,629.69

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Solution

The fourth proportional to 20,100.35, 30,152.86 and 7,629.69 is: 11,445.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.35 : 30,152.86 = 7,629.69 : x
  2. Step 2: Convert to fraction form
    20,100.35/30,152.86 = 7,629.69/x
  3. Step 3: Cross multiply
    20,100.35x = 30,152.86 × 7,629.69
  4. Step 4: Simplify right side
    20,100.35x = 230,057,068.41
  5. Step 5: Solve for x
    x = 230,057,068.41/20,100.35
  6. Step 6: Final answer
    x = 11,445.42

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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.