Home / 20,329.10-28,054.57-12,262.71

Finding the Fourth Proportional to 20,329.10, 28,054.57 and 12,262.71

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Solution

The fourth proportional to 20,329.10, 28,054.57 and 12,262.71 is: 16,922.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,329.10 : 28,054.57 = 12,262.71 : x
  2. Step 2: Convert to fraction form
    20,329.10/28,054.57 = 12,262.71/x
  3. Step 3: Cross multiply
    20,329.10x = 28,054.57 × 12,262.71
  4. Step 4: Simplify right side
    20,329.10x = 344,025,056.08
  5. Step 5: Solve for x
    x = 344,025,056.08/20,329.10
  6. Step 6: Final answer
    x = 16,922.79

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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.