Home / 13,578.72-20,370.02-4,219.49

Finding the Fourth Proportional to 13,578.72, 20,370.02 and 4,219.49

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Solution

The fourth proportional to 13,578.72, 20,370.02 and 4,219.49 is: 6,329.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.72 : 20,370.02 = 4,219.49 : x
  2. Step 2: Convert to fraction form
    13,578.72/20,370.02 = 4,219.49/x
  3. Step 3: Cross multiply
    13,578.72x = 20,370.02 × 4,219.49
  4. Step 4: Simplify right side
    13,578.72x = 85,951,125.52
  5. Step 5: Solve for x
    x = 85,951,125.52/13,578.72
  6. Step 6: Final answer
    x = 6,329.84

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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.