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Finding the Fourth Proportional to 30,336.48, 45,473.90 and 11,611.72

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Solution

The fourth proportional to 30,336.48, 45,473.90 and 11,611.72 is: 17,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,336.48 : 45,473.90 = 11,611.72 : x
  2. Step 2: Convert to fraction form
    30,336.48/45,473.90 = 11,611.72/x
  3. Step 3: Cross multiply
    30,336.48x = 45,473.90 × 11,611.72
  4. Step 4: Simplify right side
    30,336.48x = 528,030,194.11
  5. Step 5: Solve for x
    x = 528,030,194.11/30,336.48
  6. Step 6: Final answer
    x = 17,405.78

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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.