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Finding the Fourth Proportional to 30,393.96, 45,590.94 and 11,915.88

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Solution

The fourth proportional to 30,393.96, 45,590.94 and 11,915.88 is: 17,873.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,393.96 : 45,590.94 = 11,915.88 : x
  2. Step 2: Convert to fraction form
    30,393.96/45,590.94 = 11,915.88/x
  3. Step 3: Cross multiply
    30,393.96x = 45,590.94 × 11,915.88
  4. Step 4: Simplify right side
    30,393.96x = 543,256,170.13
  5. Step 5: Solve for x
    x = 543,256,170.13/30,393.96
  6. Step 6: Final answer
    x = 17,873.82

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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.