Home / 39,911.30-59,858.55-20,171.30

Finding the Fourth Proportional to 39,911.30, 59,858.55 and 20,171.30

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Solution

The fourth proportional to 39,911.30, 59,858.55 and 20,171.30 is: 30,252.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,911.30 : 59,858.55 = 20,171.30 : x
  2. Step 2: Convert to fraction form
    39,911.30/59,858.55 = 20,171.30/x
  3. Step 3: Cross multiply
    39,911.30x = 59,858.55 × 20,171.30
  4. Step 4: Simplify right side
    39,911.30x = 1,207,424,769.62
  5. Step 5: Solve for x
    x = 1,207,424,769.62/39,911.30
  6. Step 6: Final answer
    x = 30,252.70

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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.