Home / 20,358.20-30,537.30-8,672.60

Finding the Fourth Proportional to 20,358.20, 30,537.30 and 8,672.60

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Solution

The fourth proportional to 20,358.20, 30,537.30 and 8,672.60 is: 13,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.20 : 30,537.30 = 8,672.60 : x
  2. Step 2: Convert to fraction form
    20,358.20/30,537.30 = 8,672.60/x
  3. Step 3: Cross multiply
    20,358.20x = 30,537.30 × 8,672.60
  4. Step 4: Simplify right side
    20,358.20x = 264,837,787.98
  5. Step 5: Solve for x
    x = 264,837,787.98/20,358.20
  6. Step 6: Final answer
    x = 13,008.90

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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.