Home / 13,081.80-19,590.30-8,394.60

Finding the Fourth Proportional to 13,081.80, 19,590.30 and 8,394.60

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Solution

The fourth proportional to 13,081.80, 19,590.30 and 8,394.60 is: 12,571.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.80 : 19,590.30 = 8,394.60 : x
  2. Step 2: Convert to fraction form
    13,081.80/19,590.30 = 8,394.60/x
  3. Step 3: Cross multiply
    13,081.80x = 19,590.30 × 8,394.60
  4. Step 4: Simplify right side
    13,081.80x = 164,452,732.38
  5. Step 5: Solve for x
    x = 164,452,732.38/13,081.80
  6. Step 6: Final answer
    x = 12,571.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.