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Finding the Fourth Proportional to 19,400.90, 29,058.15 and 16,808.90

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Solution

The fourth proportional to 19,400.90, 29,058.15 and 16,808.90 is: 25,175.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,400.90 : 29,058.15 = 16,808.90 : x
  2. Step 2: Convert to fraction form
    19,400.90/29,058.15 = 16,808.90/x
  3. Step 3: Cross multiply
    19,400.90x = 29,058.15 × 16,808.90
  4. Step 4: Simplify right side
    19,400.90x = 488,435,537.54
  5. Step 5: Solve for x
    x = 488,435,537.54/19,400.90
  6. Step 6: Final answer
    x = 25,175.92

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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.