Home / 20,005.06-30,007.60-5,213.94

Finding the Fourth Proportional to 20,005.06, 30,007.60 and 5,213.94

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Solution

The fourth proportional to 20,005.06, 30,007.60 and 5,213.94 is: 7,820.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,005.06 : 30,007.60 = 5,213.94 : x
  2. Step 2: Convert to fraction form
    20,005.06/30,007.60 = 5,213.94/x
  3. Step 3: Cross multiply
    20,005.06x = 30,007.60 × 5,213.94
  4. Step 4: Simplify right side
    20,005.06x = 156,457,825.94
  5. Step 5: Solve for x
    x = 156,457,825.94/20,005.06
  6. Step 6: Final answer
    x = 7,820.91

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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.