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Finding the Fourth Proportional to 20,503.98, 30,732.08 and 9,411.84

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Solution

The fourth proportional to 20,503.98, 30,732.08 and 9,411.84 is: 14,106.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.98 : 30,732.08 = 9,411.84 : x
  2. Step 2: Convert to fraction form
    20,503.98/30,732.08 = 9,411.84/x
  3. Step 3: Cross multiply
    20,503.98x = 30,732.08 × 9,411.84
  4. Step 4: Simplify right side
    20,503.98x = 289,245,372.77
  5. Step 5: Solve for x
    x = 289,245,372.77/20,503.98
  6. Step 6: Final answer
    x = 14,106.79

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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.