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Finding the Fourth Proportional to 20,394.10, 30,602.30 and 7,914.62

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Solution

The fourth proportional to 20,394.10, 30,602.30 and 7,914.62 is: 11,876.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,394.10 : 30,602.30 = 7,914.62 : x
  2. Step 2: Convert to fraction form
    20,394.10/30,602.30 = 7,914.62/x
  3. Step 3: Cross multiply
    20,394.10x = 30,602.30 × 7,914.62
  4. Step 4: Simplify right side
    20,394.10x = 242,205,536.05
  5. Step 5: Solve for x
    x = 242,205,536.05/20,394.10
  6. Step 6: Final answer
    x = 11,876.26

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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.