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Finding the Fourth Proportional to 18,671.42, 28,011.92 and 6,194.94

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Solution

The fourth proportional to 18,671.42, 28,011.92 and 6,194.94 is: 9,294.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.42 : 28,011.92 = 6,194.94 : x
  2. Step 2: Convert to fraction form
    18,671.42/28,011.92 = 6,194.94/x
  3. Step 3: Cross multiply
    18,671.42x = 28,011.92 × 6,194.94
  4. Step 4: Simplify right side
    18,671.42x = 173,532,163.68
  5. Step 5: Solve for x
    x = 173,532,163.68/18,671.42
  6. Step 6: Final answer
    x = 9,294.00

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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.