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Finding the Fourth Proportional to 30,318.98, 45,475.29 and 8,134.63

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Solution

The fourth proportional to 30,318.98, 45,475.29 and 8,134.63 is: 12,201.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,318.98 : 45,475.29 = 8,134.63 : x
  2. Step 2: Convert to fraction form
    30,318.98/45,475.29 = 8,134.63/x
  3. Step 3: Cross multiply
    30,318.98x = 45,475.29 × 8,134.63
  4. Step 4: Simplify right side
    30,318.98x = 369,924,544.60
  5. Step 5: Solve for x
    x = 369,924,544.60/30,318.98
  6. Step 6: Final answer
    x = 12,201.09

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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.