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Finding the Fourth Proportional to 14,988.94, 20,684.62 and 8,274.56

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Solution

The fourth proportional to 14,988.94, 20,684.62 and 8,274.56 is: 11,418.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,988.94 : 20,684.62 = 8,274.56 : x
  2. Step 2: Convert to fraction form
    14,988.94/20,684.62 = 8,274.56/x
  3. Step 3: Cross multiply
    14,988.94x = 20,684.62 × 8,274.56
  4. Step 4: Simplify right side
    14,988.94x = 171,156,129.27
  5. Step 5: Solve for x
    x = 171,156,129.27/14,988.94
  6. Step 6: Final answer
    x = 11,418.83

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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.