Home / 21,418.67-29,563.74-12,467.90

Finding the Fourth Proportional to 21,418.67, 29,563.74 and 12,467.90

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Solution

The fourth proportional to 21,418.67, 29,563.74 and 12,467.90 is: 17,209.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418.67 : 29,563.74 = 12,467.90 : x
  2. Step 2: Convert to fraction form
    21,418.67/29,563.74 = 12,467.90/x
  3. Step 3: Cross multiply
    21,418.67x = 29,563.74 × 12,467.90
  4. Step 4: Simplify right side
    21,418.67x = 368,597,753.95
  5. Step 5: Solve for x
    x = 368,597,753.95/21,418.67
  6. Step 6: Final answer
    x = 17,209.18

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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.