Home / 39,161.55-54,043.01-21,256.56

Finding the Fourth Proportional to 39,161.55, 54,043.01 and 21,256.56

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Solution

The fourth proportional to 39,161.55, 54,043.01 and 21,256.56 is: 29,334.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,161.55 : 54,043.01 = 21,256.56 : x
  2. Step 2: Convert to fraction form
    39,161.55/54,043.01 = 21,256.56/x
  3. Step 3: Cross multiply
    39,161.55x = 54,043.01 × 21,256.56
  4. Step 4: Simplify right side
    39,161.55x = 1,148,768,378.36
  5. Step 5: Solve for x
    x = 1,148,768,378.36/39,161.55
  6. Step 6: Final answer
    x = 29,334.09

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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.