Home / 15,286.34-21,095.12-8,571.96

Finding the Fourth Proportional to 15,286.34, 21,095.12 and 8,571.96

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Solution

The fourth proportional to 15,286.34, 21,095.12 and 8,571.96 is: 11,829.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.34 : 21,095.12 = 8,571.96 : x
  2. Step 2: Convert to fraction form
    15,286.34/21,095.12 = 8,571.96/x
  3. Step 3: Cross multiply
    15,286.34x = 21,095.12 × 8,571.96
  4. Step 4: Simplify right side
    15,286.34x = 180,826,481.98
  5. Step 5: Solve for x
    x = 180,826,481.98/15,286.34
  6. Step 6: Final answer
    x = 11,829.29

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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.