Home / 14,481.20-21,721.80-4,620.40

Finding the Fourth Proportional to 14,481.20, 21,721.80 and 4,620.40

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Solution

The fourth proportional to 14,481.20, 21,721.80 and 4,620.40 is: 6,930.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,481.20 : 21,721.80 = 4,620.40 : x
  2. Step 2: Convert to fraction form
    14,481.20/21,721.80 = 4,620.40/x
  3. Step 3: Cross multiply
    14,481.20x = 21,721.80 × 4,620.40
  4. Step 4: Simplify right side
    14,481.20x = 100,363,404.72
  5. Step 5: Solve for x
    x = 100,363,404.72/14,481.20
  6. Step 6: Final answer
    x = 6,930.60

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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.