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Finding the Fourth Proportional to 14,874.57, 20,527.55 and 8,905.09

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Solution

The fourth proportional to 14,874.57, 20,527.55 and 8,905.09 is: 12,289.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,874.57 : 20,527.55 = 8,905.09 : x
  2. Step 2: Convert to fraction form
    14,874.57/20,527.55 = 8,905.09/x
  3. Step 3: Cross multiply
    14,874.57x = 20,527.55 × 8,905.09
  4. Step 4: Simplify right side
    14,874.57x = 182,799,584.39
  5. Step 5: Solve for x
    x = 182,799,584.39/14,874.57
  6. Step 6: Final answer
    x = 12,289.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.