Home / 12,145.80-18,204.30-6,299.40

Finding the Fourth Proportional to 12,145.80, 18,204.30 and 6,299.40

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Solution

The fourth proportional to 12,145.80, 18,204.30 and 6,299.40 is: 9,441.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.80 : 18,204.30 = 6,299.40 : x
  2. Step 2: Convert to fraction form
    12,145.80/18,204.30 = 6,299.40/x
  3. Step 3: Cross multiply
    12,145.80x = 18,204.30 × 6,299.40
  4. Step 4: Simplify right side
    12,145.80x = 114,676,167.42
  5. Step 5: Solve for x
    x = 114,676,167.42/12,145.80
  6. Step 6: Final answer
    x = 9,441.63

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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.