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Finding the Fourth Proportional to 20,200.60, 30,300.90 and 6,347.80

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Solution

The fourth proportional to 20,200.60, 30,300.90 and 6,347.80 is: 9,521.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.60 : 30,300.90 = 6,347.80 : x
  2. Step 2: Convert to fraction form
    20,200.60/30,300.90 = 6,347.80/x
  3. Step 3: Cross multiply
    20,200.60x = 30,300.90 × 6,347.80
  4. Step 4: Simplify right side
    20,200.60x = 192,344,053.02
  5. Step 5: Solve for x
    x = 192,344,053.02/20,200.60
  6. Step 6: Final answer
    x = 9,521.70

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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.