Home / 15,107.54-20,847.49-8,392.79

Finding the Fourth Proportional to 15,107.54, 20,847.49 and 8,392.79

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Solution

The fourth proportional to 15,107.54, 20,847.49 and 8,392.79 is: 11,581.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.54 : 20,847.49 = 8,392.79 : x
  2. Step 2: Convert to fraction form
    15,107.54/20,847.49 = 8,392.79/x
  3. Step 3: Cross multiply
    15,107.54x = 20,847.49 × 8,392.79
  4. Step 4: Simplify right side
    15,107.54x = 174,968,636.73
  5. Step 5: Solve for x
    x = 174,968,636.73/15,107.54
  6. Step 6: Final answer
    x = 11,581.55

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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.