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Finding the Fourth Proportional to 20,473.80, 30,710.70 and 6,622.80

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Solution

The fourth proportional to 20,473.80, 30,710.70 and 6,622.80 is: 9,934.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.80 : 30,710.70 = 6,622.80 : x
  2. Step 2: Convert to fraction form
    20,473.80/30,710.70 = 6,622.80/x
  3. Step 3: Cross multiply
    20,473.80x = 30,710.70 × 6,622.80
  4. Step 4: Simplify right side
    20,473.80x = 203,390,823.96
  5. Step 5: Solve for x
    x = 203,390,823.96/20,473.80
  6. Step 6: Final answer
    x = 9,934.20

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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.