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Finding the Fourth Proportional to 20,017.80, 29,990.70 and 9,606.60

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Solution

The fourth proportional to 20,017.80, 29,990.70 and 9,606.60 is: 14,392.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,017.80 : 29,990.70 = 9,606.60 : x
  2. Step 2: Convert to fraction form
    20,017.80/29,990.70 = 9,606.60/x
  3. Step 3: Cross multiply
    20,017.80x = 29,990.70 × 9,606.60
  4. Step 4: Simplify right side
    20,017.80x = 288,108,658.62
  5. Step 5: Solve for x
    x = 288,108,658.62/20,017.80
  6. Step 6: Final answer
    x = 14,392.62

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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.