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Finding the Fourth Proportional to 20,513.35, 30,770.03 and 18,569.35

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Solution

The fourth proportional to 20,513.35, 30,770.03 and 18,569.35 is: 27,854.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.35 : 30,770.03 = 18,569.35 : x
  2. Step 2: Convert to fraction form
    20,513.35/30,770.03 = 18,569.35/x
  3. Step 3: Cross multiply
    20,513.35x = 30,770.03 × 18,569.35
  4. Step 4: Simplify right side
    20,513.35x = 571,379,456.58
  5. Step 5: Solve for x
    x = 571,379,456.58/20,513.35
  6. Step 6: Final answer
    x = 27,854.03

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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.