Home / 15,336.17-21,163.78-8,621.72

Finding the Fourth Proportional to 15,336.17, 21,163.78 and 8,621.72

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Solution

The fourth proportional to 15,336.17, 21,163.78 and 8,621.72 is: 11,897.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,336.17 : 21,163.78 = 8,621.72 : x
  2. Step 2: Convert to fraction form
    15,336.17/21,163.78 = 8,621.72/x
  3. Step 3: Cross multiply
    15,336.17x = 21,163.78 × 8,621.72
  4. Step 4: Simplify right side
    15,336.17x = 182,468,185.30
  5. Step 5: Solve for x
    x = 182,468,185.30/15,336.17
  6. Step 6: Final answer
    x = 11,897.90

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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.