Home / 19,860.32-29,790.43-12,469.97

Finding the Fourth Proportional to 19,860.32, 29,790.43 and 12,469.97

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Solution

The fourth proportional to 19,860.32, 29,790.43 and 12,469.97 is: 18,704.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.32 : 29,790.43 = 12,469.97 : x
  2. Step 2: Convert to fraction form
    19,860.32/29,790.43 = 12,469.97/x
  3. Step 3: Cross multiply
    19,860.32x = 29,790.43 × 12,469.97
  4. Step 4: Simplify right side
    19,860.32x = 371,485,714.26
  5. Step 5: Solve for x
    x = 371,485,714.26/19,860.32
  6. Step 6: Final answer
    x = 18,704.92

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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.