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Finding the Fourth Proportional to 20,073.80, 30,100.60 and 11,756.48

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Solution

The fourth proportional to 20,073.80, 30,100.60 and 11,756.48 is: 17,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,073.80 : 30,100.60 = 11,756.48 : x
  2. Step 2: Convert to fraction form
    20,073.80/30,100.60 = 11,756.48/x
  3. Step 3: Cross multiply
    20,073.80x = 30,100.60 × 11,756.48
  4. Step 4: Simplify right side
    20,073.80x = 353,877,101.89
  5. Step 5: Solve for x
    x = 353,877,101.89/20,073.80
  6. Step 6: Final answer
    x = 17,628.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.