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Finding the Fourth Proportional to 19,407.30, 29,105.19 and 15,519.30

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Solution

The fourth proportional to 19,407.30, 29,105.19 and 15,519.30 is: 23,274.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,407.30 : 29,105.19 = 15,519.30 : x
  2. Step 2: Convert to fraction form
    19,407.30/29,105.19 = 15,519.30/x
  3. Step 3: Cross multiply
    19,407.30x = 29,105.19 × 15,519.30
  4. Step 4: Simplify right side
    19,407.30x = 451,692,175.17
  5. Step 5: Solve for x
    x = 451,692,175.17/19,407.30
  6. Step 6: Final answer
    x = 23,274.34

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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.