Home / 39,194.90-54,089.45-21,290.21

Finding the Fourth Proportional to 39,194.90, 54,089.45 and 21,290.21

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Solution

The fourth proportional to 39,194.90, 54,089.45 and 21,290.21 is: 29,380.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,194.90 : 54,089.45 = 21,290.21 : x
  2. Step 2: Convert to fraction form
    39,194.90/54,089.45 = 21,290.21/x
  3. Step 3: Cross multiply
    39,194.90x = 54,089.45 × 21,290.21
  4. Step 4: Simplify right side
    39,194.90x = 1,151,575,749.28
  5. Step 5: Solve for x
    x = 1,151,575,749.28/39,194.90
  6. Step 6: Final answer
    x = 29,380.75

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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.