Home / 20,412.20-30,630.57-8,725.43

Finding the Fourth Proportional to 20,412.20, 30,630.57 and 8,725.43

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Solution

The fourth proportional to 20,412.20, 30,630.57 and 8,725.43 is: 13,093.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.20 : 30,630.57 = 8,725.43 : x
  2. Step 2: Convert to fraction form
    20,412.20/30,630.57 = 8,725.43/x
  3. Step 3: Cross multiply
    20,412.20x = 30,630.57 × 8,725.43
  4. Step 4: Simplify right side
    20,412.20x = 267,264,741.24
  5. Step 5: Solve for x
    x = 267,264,741.24/20,412.20
  6. Step 6: Final answer
    x = 13,093.38

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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.