Home / 21,422.26-29,563.85-13,461.54

Finding the Fourth Proportional to 21,422.26, 29,563.85 and 13,461.54

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Solution

The fourth proportional to 21,422.26, 29,563.85 and 13,461.54 is: 18,577.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.26 : 29,563.85 = 13,461.54 : x
  2. Step 2: Convert to fraction form
    21,422.26/29,563.85 = 13,461.54/x
  3. Step 3: Cross multiply
    21,422.26x = 29,563.85 × 13,461.54
  4. Step 4: Simplify right side
    21,422.26x = 397,974,949.33
  5. Step 5: Solve for x
    x = 397,974,949.33/21,422.26
  6. Step 6: Final answer
    x = 18,577.64

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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.