Home / 20,617.73-28,450.07-11,543.60

Finding the Fourth Proportional to 20,617.73, 28,450.07 and 11,543.60

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Solution

The fourth proportional to 20,617.73, 28,450.07 and 11,543.60 is: 15,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.73 : 28,450.07 = 11,543.60 : x
  2. Step 2: Convert to fraction form
    20,617.73/28,450.07 = 11,543.60/x
  3. Step 3: Cross multiply
    20,617.73x = 28,450.07 × 11,543.60
  4. Step 4: Simplify right side
    20,617.73x = 328,416,028.08
  5. Step 5: Solve for x
    x = 328,416,028.08/20,617.73
  6. Step 6: Final answer
    x = 15,928.82

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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.