Home / 19,269.20-28,909.20-9,408.80

Finding the Fourth Proportional to 19,269.20, 28,909.20 and 9,408.80

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Solution

The fourth proportional to 19,269.20, 28,909.20 and 9,408.80 is: 14,115.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,269.20 : 28,909.20 = 9,408.80 : x
  2. Step 2: Convert to fraction form
    19,269.20/28,909.20 = 9,408.80/x
  3. Step 3: Cross multiply
    19,269.20x = 28,909.20 × 9,408.80
  4. Step 4: Simplify right side
    19,269.20x = 272,000,880.96
  5. Step 5: Solve for x
    x = 272,000,880.96/19,269.20
  6. Step 6: Final answer
    x = 14,115.84

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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.