Home / 20,136.60-30,207.60-8,447.04

Finding the Fourth Proportional to 20,136.60, 30,207.60 and 8,447.04

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Solution

The fourth proportional to 20,136.60, 30,207.60 and 8,447.04 is: 12,671.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.60 : 30,207.60 = 8,447.04 : x
  2. Step 2: Convert to fraction form
    20,136.60/30,207.60 = 8,447.04/x
  3. Step 3: Cross multiply
    20,136.60x = 30,207.60 × 8,447.04
  4. Step 4: Simplify right side
    20,136.60x = 255,164,805.50
  5. Step 5: Solve for x
    x = 255,164,805.50/20,136.60
  6. Step 6: Final answer
    x = 12,671.69

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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.