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Finding the Fourth Proportional to 14,988.56, 20,684.24 and 8,274.20

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Solution

The fourth proportional to 14,988.56, 20,684.24 and 8,274.20 is: 11,418.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,988.56 : 20,684.24 = 8,274.20 : x
  2. Step 2: Convert to fraction form
    14,988.56/20,684.24 = 8,274.20/x
  3. Step 3: Cross multiply
    14,988.56x = 20,684.24 × 8,274.20
  4. Step 4: Simplify right side
    14,988.56x = 171,145,500.47
  5. Step 5: Solve for x
    x = 171,145,500.47/14,988.56
  6. Step 6: Final answer
    x = 11,418.41

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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.