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Finding the Fourth Proportional to 28,160.39, 38,859.80 and 16,059.09

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Solution

The fourth proportional to 28,160.39, 38,859.80 and 16,059.09 is: 22,160.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.39 : 38,859.80 = 16,059.09 : x
  2. Step 2: Convert to fraction form
    28,160.39/38,859.80 = 16,059.09/x
  3. Step 3: Cross multiply
    28,160.39x = 38,859.80 × 16,059.09
  4. Step 4: Simplify right side
    28,160.39x = 624,052,945.29
  5. Step 5: Solve for x
    x = 624,052,945.29/28,160.39
  6. Step 6: Final answer
    x = 22,160.67

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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.