Home / 39,206.20-54,103.62-21,300.80

Finding the Fourth Proportional to 39,206.20, 54,103.62 and 21,300.80

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Solution

The fourth proportional to 39,206.20, 54,103.62 and 21,300.80 is: 29,394.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,206.20 : 54,103.62 = 21,300.80 : x
  2. Step 2: Convert to fraction form
    39,206.20/54,103.62 = 21,300.80/x
  3. Step 3: Cross multiply
    39,206.20x = 54,103.62 × 21,300.80
  4. Step 4: Simplify right side
    39,206.20x = 1,152,450,388.90
  5. Step 5: Solve for x
    x = 1,152,450,388.90/39,206.20
  6. Step 6: Final answer
    x = 29,394.60

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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.