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Finding the Fourth Proportional to 30,455.31, 45,690.84 and 9,394.88

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Solution

The fourth proportional to 30,455.31, 45,690.84 and 9,394.88 is: 14,094.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,455.31 : 45,690.84 = 9,394.88 : x
  2. Step 2: Convert to fraction form
    30,455.31/45,690.84 = 9,394.88/x
  3. Step 3: Cross multiply
    30,455.31x = 45,690.84 × 9,394.88
  4. Step 4: Simplify right side
    30,455.31x = 429,260,073.13
  5. Step 5: Solve for x
    x = 429,260,073.13/30,455.31
  6. Step 6: Final answer
    x = 14,094.75

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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.