Home / 38,091.90-57,115.94-20,300.64

Finding the Fourth Proportional to 38,091.90, 57,115.94 and 20,300.64

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Solution

The fourth proportional to 38,091.90, 57,115.94 and 20,300.64 is: 30,439.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,091.90 : 57,115.94 = 20,300.64 : x
  2. Step 2: Convert to fraction form
    38,091.90/57,115.94 = 20,300.64/x
  3. Step 3: Cross multiply
    38,091.90x = 57,115.94 × 20,300.64
  4. Step 4: Simplify right side
    38,091.90x = 1,159,490,136.20
  5. Step 5: Solve for x
    x = 1,159,490,136.20/38,091.90
  6. Step 6: Final answer
    x = 30,439.28

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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.