Home / 20,091.36-30,133.60-5,300.43

Finding the Fourth Proportional to 20,091.36, 30,133.60 and 5,300.43

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Solution

The fourth proportional to 20,091.36, 30,133.60 and 5,300.43 is: 7,949.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.36 : 30,133.60 = 5,300.43 : x
  2. Step 2: Convert to fraction form
    20,091.36/30,133.60 = 5,300.43/x
  3. Step 3: Cross multiply
    20,091.36x = 30,133.60 × 5,300.43
  4. Step 4: Simplify right side
    20,091.36x = 159,721,037.45
  5. Step 5: Solve for x
    x = 159,721,037.45/20,091.36
  6. Step 6: Final answer
    x = 7,949.74

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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.