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Finding the Fourth Proportional to 14,930.55, 20,604.51 and 8,216.55

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Solution

The fourth proportional to 14,930.55, 20,604.51 and 8,216.55 is: 11,339.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,930.55 : 20,604.51 = 8,216.55 : x
  2. Step 2: Convert to fraction form
    14,930.55/20,604.51 = 8,216.55/x
  3. Step 3: Cross multiply
    14,930.55x = 20,604.51 × 8,216.55
  4. Step 4: Simplify right side
    14,930.55x = 169,297,986.64
  5. Step 5: Solve for x
    x = 169,297,986.64/14,930.55
  6. Step 6: Final answer
    x = 11,339.03

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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.