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Finding the Fourth Proportional to 19,406.30, 29,103.69 and 15,518.30

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Solution

The fourth proportional to 19,406.30, 29,103.69 and 15,518.30 is: 23,272.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,406.30 : 29,103.69 = 15,518.30 : x
  2. Step 2: Convert to fraction form
    19,406.30/29,103.69 = 15,518.30/x
  3. Step 3: Cross multiply
    19,406.30x = 29,103.69 × 15,518.30
  4. Step 4: Simplify right side
    19,406.30x = 451,639,792.53
  5. Step 5: Solve for x
    x = 451,639,792.53/19,406.30
  6. Step 6: Final answer
    x = 23,272.84

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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.