Home / 20,600.34-30,890.43-7,450.74

Finding the Fourth Proportional to 20,600.34, 30,890.43 and 7,450.74

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Solution

The fourth proportional to 20,600.34, 30,890.43 and 7,450.74 is: 11,172.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.34 : 30,890.43 = 7,450.74 : x
  2. Step 2: Convert to fraction form
    20,600.34/30,890.43 = 7,450.74/x
  3. Step 3: Cross multiply
    20,600.34x = 30,890.43 × 7,450.74
  4. Step 4: Simplify right side
    20,600.34x = 230,156,562.42
  5. Step 5: Solve for x
    x = 230,156,562.42/20,600.34
  6. Step 6: Final answer
    x = 11,172.46

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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.