Home / 12,343.55-18,511.52-3,579.11

Finding the Fourth Proportional to 12,343.55, 18,511.52 and 3,579.11

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Solution

The fourth proportional to 12,343.55, 18,511.52 and 3,579.11 is: 5,367.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,343.55 : 18,511.52 = 3,579.11 : x
  2. Step 2: Convert to fraction form
    12,343.55/18,511.52 = 3,579.11/x
  3. Step 3: Cross multiply
    12,343.55x = 18,511.52 × 3,579.11
  4. Step 4: Simplify right side
    12,343.55x = 66,254,748.45
  5. Step 5: Solve for x
    x = 66,254,748.45/12,343.55
  6. Step 6: Final answer
    x = 5,367.56

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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.