Home / 15,347.43-21,087.68-12,198.15

Finding the Fourth Proportional to 15,347.43, 21,087.68 and 12,198.15

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Solution

The fourth proportional to 15,347.43, 21,087.68 and 12,198.15 is: 16,760.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.43 : 21,087.68 = 12,198.15 : x
  2. Step 2: Convert to fraction form
    15,347.43/21,087.68 = 12,198.15/x
  3. Step 3: Cross multiply
    15,347.43x = 21,087.68 × 12,198.15
  4. Step 4: Simplify right side
    15,347.43x = 257,230,622.80
  5. Step 5: Solve for x
    x = 257,230,622.80/15,347.43
  6. Step 6: Final answer
    x = 16,760.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.