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Finding the Fourth Proportional to 19,608.30, 29,400.30 and 11,284.20

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Solution

The fourth proportional to 19,608.30, 29,400.30 and 11,284.20 is: 16,919.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,608.30 : 29,400.30 = 11,284.20 : x
  2. Step 2: Convert to fraction form
    19,608.30/29,400.30 = 11,284.20/x
  3. Step 3: Cross multiply
    19,608.30x = 29,400.30 × 11,284.20
  4. Step 4: Simplify right side
    19,608.30x = 331,758,865.26
  5. Step 5: Solve for x
    x = 331,758,865.26/19,608.30
  6. Step 6: Final answer
    x = 16,919.31

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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.