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Finding the Fourth Proportional to 18,606.60, 27,909.90 and 12,701.70

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Solution

The fourth proportional to 18,606.60, 27,909.90 and 12,701.70 is: 19,052.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,606.60 : 27,909.90 = 12,701.70 : x
  2. Step 2: Convert to fraction form
    18,606.60/27,909.90 = 12,701.70/x
  3. Step 3: Cross multiply
    18,606.60x = 27,909.90 × 12,701.70
  4. Step 4: Simplify right side
    18,606.60x = 354,503,176.83
  5. Step 5: Solve for x
    x = 354,503,176.83/18,606.60
  6. Step 6: Final answer
    x = 19,052.55

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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.