Home / 14,579.20-21,820.20-12,829.60

Finding the Fourth Proportional to 14,579.20, 21,820.20 and 12,829.60

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Solution

The fourth proportional to 14,579.20, 21,820.20 and 12,829.60 is: 19,201.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,579.20 : 21,820.20 = 12,829.60 : x
  2. Step 2: Convert to fraction form
    14,579.20/21,820.20 = 12,829.60/x
  3. Step 3: Cross multiply
    14,579.20x = 21,820.20 × 12,829.60
  4. Step 4: Simplify right side
    14,579.20x = 279,944,437.92
  5. Step 5: Solve for x
    x = 279,944,437.92/14,579.20
  6. Step 6: Final answer
    x = 19,201.63

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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.