Home / 20,646.06-28,495.71-12,260.94

Finding the Fourth Proportional to 20,646.06, 28,495.71 and 12,260.94

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Solution

The fourth proportional to 20,646.06, 28,495.71 and 12,260.94 is: 16,922.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.06 : 28,495.71 = 12,260.94 : x
  2. Step 2: Convert to fraction form
    20,646.06/28,495.71 = 12,260.94/x
  3. Step 3: Cross multiply
    20,646.06x = 28,495.71 × 12,260.94
  4. Step 4: Simplify right side
    20,646.06x = 349,384,190.57
  5. Step 5: Solve for x
    x = 349,384,190.57/20,646.06
  6. Step 6: Final answer
    x = 16,922.56

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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.