Home / 19,179.23-28,768.78-8,636.90

Finding the Fourth Proportional to 19,179.23, 28,768.78 and 8,636.90

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Solution

The fourth proportional to 19,179.23, 28,768.78 and 8,636.90 is: 12,955.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,179.23 : 28,768.78 = 8,636.90 : x
  2. Step 2: Convert to fraction form
    19,179.23/28,768.78 = 8,636.90/x
  3. Step 3: Cross multiply
    19,179.23x = 28,768.78 × 8,636.90
  4. Step 4: Simplify right side
    19,179.23x = 248,473,147.90
  5. Step 5: Solve for x
    x = 248,473,147.90/19,179.23
  6. Step 6: Final answer
    x = 12,955.33

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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.