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Finding the Fourth Proportional to 30,575.80, 45,855.90 and 9,511.72

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Solution

The fourth proportional to 30,575.80, 45,855.90 and 9,511.72 is: 14,265.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,575.80 : 45,855.90 = 9,511.72 : x
  2. Step 2: Convert to fraction form
    30,575.80/45,855.90 = 9,511.72/x
  3. Step 3: Cross multiply
    30,575.80x = 45,855.90 × 9,511.72
  4. Step 4: Simplify right side
    30,575.80x = 436,168,481.15
  5. Step 5: Solve for x
    x = 436,168,481.15/30,575.80
  6. Step 6: Final answer
    x = 14,265.15

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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.