Home / 20,185.40-30,282.90-8,492.60

Finding the Fourth Proportional to 20,185.40, 30,282.90 and 8,492.60

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Solution

The fourth proportional to 20,185.40, 30,282.90 and 8,492.60 is: 12,740.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.40 : 30,282.90 = 8,492.60 : x
  2. Step 2: Convert to fraction form
    20,185.40/30,282.90 = 8,492.60/x
  3. Step 3: Cross multiply
    20,185.40x = 30,282.90 × 8,492.60
  4. Step 4: Simplify right side
    20,185.40x = 257,180,556.54
  5. Step 5: Solve for x
    x = 257,180,556.54/20,185.40
  6. Step 6: Final answer
    x = 12,740.92

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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.