Home / 13,621.58-18,797.49-8,031.50

Finding the Fourth Proportional to 13,621.58, 18,797.49 and 8,031.50

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Solution

The fourth proportional to 13,621.58, 18,797.49 and 8,031.50 is: 11,083.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.58 : 18,797.49 = 8,031.50 : x
  2. Step 2: Convert to fraction form
    13,621.58/18,797.49 = 8,031.50/x
  3. Step 3: Cross multiply
    13,621.58x = 18,797.49 × 8,031.50
  4. Step 4: Simplify right side
    13,621.58x = 150,972,040.94
  5. Step 5: Solve for x
    x = 150,972,040.94/13,621.58
  6. Step 6: Final answer
    x = 11,083.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.