Home / 20,272.34-30,408.30-6,421.34

Finding the Fourth Proportional to 20,272.34, 30,408.30 and 6,421.34

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Solution

The fourth proportional to 20,272.34, 30,408.30 and 6,421.34 is: 9,631.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.34 : 30,408.30 = 6,421.34 : x
  2. Step 2: Convert to fraction form
    20,272.34/30,408.30 = 6,421.34/x
  3. Step 3: Cross multiply
    20,272.34x = 30,408.30 × 6,421.34
  4. Step 4: Simplify right side
    20,272.34x = 195,262,033.12
  5. Step 5: Solve for x
    x = 195,262,033.12/20,272.34
  6. Step 6: Final answer
    x = 9,631.94

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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.