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Finding the Fourth Proportional to 30,617.64, 45,921.06 and 8,425.62

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Solution

The fourth proportional to 30,617.64, 45,921.06 and 8,425.62 is: 12,636.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,617.64 : 45,921.06 = 8,425.62 : x
  2. Step 2: Convert to fraction form
    30,617.64/45,921.06 = 8,425.62/x
  3. Step 3: Cross multiply
    30,617.64x = 45,921.06 × 8,425.62
  4. Step 4: Simplify right side
    30,617.64x = 386,913,401.56
  5. Step 5: Solve for x
    x = 386,913,401.56/30,617.64
  6. Step 6: Final answer
    x = 12,636.94

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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.