Home / 19,181.23-28,771.78-8,638.90

Finding the Fourth Proportional to 19,181.23, 28,771.78 and 8,638.90

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Solution

The fourth proportional to 19,181.23, 28,771.78 and 8,638.90 is: 12,958.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,181.23 : 28,771.78 = 8,638.90 : x
  2. Step 2: Convert to fraction form
    19,181.23/28,771.78 = 8,638.90/x
  3. Step 3: Cross multiply
    19,181.23x = 28,771.78 × 8,638.90
  4. Step 4: Simplify right side
    19,181.23x = 248,556,530.24
  5. Step 5: Solve for x
    x = 248,556,530.24/19,181.23
  6. Step 6: Final answer
    x = 12,958.32

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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.