Home / 21,562.55-29,745.43-12,604.20

Finding the Fourth Proportional to 21,562.55, 29,745.43 and 12,604.20

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Solution

The fourth proportional to 21,562.55, 29,745.43 and 12,604.20 is: 17,387.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,562.55 : 29,745.43 = 12,604.20 : x
  2. Step 2: Convert to fraction form
    21,562.55/29,745.43 = 12,604.20/x
  3. Step 3: Cross multiply
    21,562.55x = 29,745.43 × 12,604.20
  4. Step 4: Simplify right side
    21,562.55x = 374,917,137.06
  5. Step 5: Solve for x
    x = 374,917,137.06/21,562.55
  6. Step 6: Final answer
    x = 17,387.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.