Home / 39,065.74-53,910.68-21,161.10

Finding the Fourth Proportional to 39,065.74, 53,910.68 and 21,161.10

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Solution

The fourth proportional to 39,065.74, 53,910.68 and 21,161.10 is: 29,202.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,065.74 : 53,910.68 = 21,161.10 : x
  2. Step 2: Convert to fraction form
    39,065.74/53,910.68 = 21,161.10/x
  3. Step 3: Cross multiply
    39,065.74x = 53,910.68 × 21,161.10
  4. Step 4: Simplify right side
    39,065.74x = 1,140,809,290.55
  5. Step 5: Solve for x
    x = 1,140,809,290.55/39,065.74
  6. Step 6: Final answer
    x = 29,202.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.