Home / 21,372.94-29,488.08-12,418.75

Finding the Fourth Proportional to 21,372.94, 29,488.08 and 12,418.75

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Solution

The fourth proportional to 21,372.94, 29,488.08 and 12,418.75 is: 17,134.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,372.94 : 29,488.08 = 12,418.75 : x
  2. Step 2: Convert to fraction form
    21,372.94/29,488.08 = 12,418.75/x
  3. Step 3: Cross multiply
    21,372.94x = 29,488.08 × 12,418.75
  4. Step 4: Simplify right side
    21,372.94x = 366,205,093.50
  5. Step 5: Solve for x
    x = 366,205,093.50/21,372.94
  6. Step 6: Final answer
    x = 17,134.05

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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.