Home / 12,145.10-18,217.64-3,380.02

Finding the Fourth Proportional to 12,145.10, 18,217.64 and 3,380.02

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Solution

The fourth proportional to 12,145.10, 18,217.64 and 3,380.02 is: 5,070.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.10 : 18,217.64 = 3,380.02 : x
  2. Step 2: Convert to fraction form
    12,145.10/18,217.64 = 3,380.02/x
  3. Step 3: Cross multiply
    12,145.10x = 18,217.64 × 3,380.02
  4. Step 4: Simplify right side
    12,145.10x = 61,575,950.46
  5. Step 5: Solve for x
    x = 61,575,950.46/12,145.10
  6. Step 6: Final answer
    x = 5,070.03

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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.