Home / 12,579.12-18,869.64-3,344.88

Finding the Fourth Proportional to 12,579.12, 18,869.64 and 3,344.88

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Solution

The fourth proportional to 12,579.12, 18,869.64 and 3,344.88 is: 5,017.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.12 : 18,869.64 = 3,344.88 : x
  2. Step 2: Convert to fraction form
    12,579.12/18,869.64 = 3,344.88/x
  3. Step 3: Cross multiply
    12,579.12x = 18,869.64 × 3,344.88
  4. Step 4: Simplify right side
    12,579.12x = 63,116,681.44
  5. Step 5: Solve for x
    x = 63,116,681.44/12,579.12
  6. Step 6: Final answer
    x = 5,017.58

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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.