Home / 21,305.98-29,403.55-11,745.87

Finding the Fourth Proportional to 21,305.98, 29,403.55 and 11,745.87

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Solution

The fourth proportional to 21,305.98, 29,403.55 and 11,745.87 is: 16,210.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.98 : 29,403.55 = 11,745.87 : x
  2. Step 2: Convert to fraction form
    21,305.98/29,403.55 = 11,745.87/x
  3. Step 3: Cross multiply
    21,305.98x = 29,403.55 × 11,745.87
  4. Step 4: Simplify right side
    21,305.98x = 345,370,275.84
  5. Step 5: Solve for x
    x = 345,370,275.84/21,305.98
  6. Step 6: Final answer
    x = 16,210.02

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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.