Home / 12,579.64-18,869.26-3,219.58

Finding the Fourth Proportional to 12,579.64, 18,869.26 and 3,219.58

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Solution

The fourth proportional to 12,579.64, 18,869.26 and 3,219.58 is: 4,829.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.64 : 18,869.26 = 3,219.58 : x
  2. Step 2: Convert to fraction form
    12,579.64/18,869.26 = 3,219.58/x
  3. Step 3: Cross multiply
    12,579.64x = 18,869.26 × 3,219.58
  4. Step 4: Simplify right side
    12,579.64x = 60,751,092.11
  5. Step 5: Solve for x
    x = 60,751,092.11/12,579.64
  6. Step 6: Final answer
    x = 4,829.32

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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.