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Finding the Fourth Proportional to 28,096.80, 38,780.40 and 16,166.40

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Solution

The fourth proportional to 28,096.80, 38,780.40 and 16,166.40 is: 22,313.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,096.80 : 38,780.40 = 16,166.40 : x
  2. Step 2: Convert to fraction form
    28,096.80/38,780.40 = 16,166.40/x
  3. Step 3: Cross multiply
    28,096.80x = 38,780.40 × 16,166.40
  4. Step 4: Simplify right side
    28,096.80x = 626,939,458.56
  5. Step 5: Solve for x
    x = 626,939,458.56/28,096.80
  6. Step 6: Final answer
    x = 22,313.55

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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.