Home / 20,744.61-28,630.76-12,247.64

Finding the Fourth Proportional to 20,744.61, 28,630.76 and 12,247.64

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Solution

The fourth proportional to 20,744.61, 28,630.76 and 12,247.64 is: 16,903.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.61 : 28,630.76 = 12,247.64 : x
  2. Step 2: Convert to fraction form
    20,744.61/28,630.76 = 12,247.64/x
  3. Step 3: Cross multiply
    20,744.61x = 28,630.76 × 12,247.64
  4. Step 4: Simplify right side
    20,744.61x = 350,659,241.41
  5. Step 5: Solve for x
    x = 350,659,241.41/20,744.61
  6. Step 6: Final answer
    x = 16,903.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.