Home / 20,353.45-28,087.43-11,400.92

Finding the Fourth Proportional to 20,353.45, 28,087.43 and 11,400.92

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Solution

The fourth proportional to 20,353.45, 28,087.43 and 11,400.92 is: 15,733.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,353.45 : 28,087.43 = 11,400.92 : x
  2. Step 2: Convert to fraction form
    20,353.45/28,087.43 = 11,400.92/x
  3. Step 3: Cross multiply
    20,353.45x = 28,087.43 × 11,400.92
  4. Step 4: Simplify right side
    20,353.45x = 320,222,485.43
  5. Step 5: Solve for x
    x = 320,222,485.43/20,353.45
  6. Step 6: Final answer
    x = 15,733.09

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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.