Home / 20,440.40-30,654.84-8,766.32

Finding the Fourth Proportional to 20,440.40, 30,654.84 and 8,766.32

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Solution

The fourth proportional to 20,440.40, 30,654.84 and 8,766.32 is: 13,147.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.40 : 30,654.84 = 8,766.32 : x
  2. Step 2: Convert to fraction form
    20,440.40/30,654.84 = 8,766.32/x
  3. Step 3: Cross multiply
    20,440.40x = 30,654.84 × 8,766.32
  4. Step 4: Simplify right side
    20,440.40x = 268,730,136.99
  5. Step 5: Solve for x
    x = 268,730,136.99/20,440.40
  6. Step 6: Final answer
    x = 13,147.01

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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.