Home / 39,991.26-59,994.99-11,911.80

Finding the Fourth Proportional to 39,991.26, 59,994.99 and 11,911.80

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Solution

The fourth proportional to 39,991.26, 59,994.99 and 11,911.80 is: 17,870.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,991.26 : 59,994.99 = 11,911.80 : x
  2. Step 2: Convert to fraction form
    39,991.26/59,994.99 = 11,911.80/x
  3. Step 3: Cross multiply
    39,991.26x = 59,994.99 × 11,911.80
  4. Step 4: Simplify right side
    39,991.26x = 714,648,321.88
  5. Step 5: Solve for x
    x = 714,648,321.88/39,991.26
  6. Step 6: Final answer
    x = 17,870.11

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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.