Home / 20,409.06-28,163.78-12,464.58

Finding the Fourth Proportional to 20,409.06, 28,163.78 and 12,464.58

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Solution

The fourth proportional to 20,409.06, 28,163.78 and 12,464.58 is: 17,200.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.06 : 28,163.78 = 12,464.58 : x
  2. Step 2: Convert to fraction form
    20,409.06/28,163.78 = 12,464.58/x
  3. Step 3: Cross multiply
    20,409.06x = 28,163.78 × 12,464.58
  4. Step 4: Simplify right side
    20,409.06x = 351,049,688.91
  5. Step 5: Solve for x
    x = 351,049,688.91/20,409.06
  6. Step 6: Final answer
    x = 17,200.68

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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.