Home / 14,245.78-21,370.68-4,385.86

Finding the Fourth Proportional to 14,245.78, 21,370.68 and 4,385.86

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Solution

The fourth proportional to 14,245.78, 21,370.68 and 4,385.86 is: 6,579.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,245.78 : 21,370.68 = 4,385.86 : x
  2. Step 2: Convert to fraction form
    14,245.78/21,370.68 = 4,385.86/x
  3. Step 3: Cross multiply
    14,245.78x = 21,370.68 × 4,385.86
  4. Step 4: Simplify right side
    14,245.78x = 93,728,810.58
  5. Step 5: Solve for x
    x = 93,728,810.58/14,245.78
  6. Step 6: Final answer
    x = 6,579.41

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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.