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Finding the Fourth Proportional to 30,458.32, 45,599.32 and 18,735.92

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Solution

The fourth proportional to 30,458.32, 45,599.32 and 18,735.92 is: 28,049.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,458.32 : 45,599.32 = 18,735.92 : x
  2. Step 2: Convert to fraction form
    30,458.32/45,599.32 = 18,735.92/x
  3. Step 3: Cross multiply
    30,458.32x = 45,599.32 × 18,735.92
  4. Step 4: Simplify right side
    30,458.32x = 854,345,211.57
  5. Step 5: Solve for x
    x = 854,345,211.57/30,458.32
  6. Step 6: Final answer
    x = 28,049.65

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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.