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Finding the Fourth Proportional to 12,573.81, 18,860.76 and 4,253.88

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Solution

The fourth proportional to 12,573.81, 18,860.76 and 4,253.88 is: 6,380.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,573.81 : 18,860.76 = 4,253.88 : x
  2. Step 2: Convert to fraction form
    12,573.81/18,860.76 = 4,253.88/x
  3. Step 3: Cross multiply
    12,573.81x = 18,860.76 × 4,253.88
  4. Step 4: Simplify right side
    12,573.81x = 80,231,409.75
  5. Step 5: Solve for x
    x = 80,231,409.75/12,573.81
  6. Step 6: Final answer
    x = 6,380.84

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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.