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Finding the Fourth Proportional to 20,200.51, 30,300.90 and 7,052.88

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Solution

The fourth proportional to 20,200.51, 30,300.90 and 7,052.88 is: 10,579.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.51 : 30,300.90 = 7,052.88 : x
  2. Step 2: Convert to fraction form
    20,200.51/30,300.90 = 7,052.88/x
  3. Step 3: Cross multiply
    20,200.51x = 30,300.90 × 7,052.88
  4. Step 4: Simplify right side
    20,200.51x = 213,708,611.59
  5. Step 5: Solve for x
    x = 213,708,611.59/20,200.51
  6. Step 6: Final answer
    x = 10,579.37

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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.