Home / 15,347.49-21,087.74-12,198.21

Finding the Fourth Proportional to 15,347.49, 21,087.74 and 12,198.21

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Solution

The fourth proportional to 15,347.49, 21,087.74 and 12,198.21 is: 16,760.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.49 : 21,087.74 = 12,198.21 : x
  2. Step 2: Convert to fraction form
    15,347.49/21,087.74 = 12,198.21/x
  3. Step 3: Cross multiply
    15,347.49x = 21,087.74 × 12,198.21
  4. Step 4: Simplify right side
    15,347.49x = 257,232,680.95
  5. Step 5: Solve for x
    x = 257,232,680.95/15,347.49
  6. Step 6: Final answer
    x = 16,760.57

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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.