Home / 21,422.26-29,562.70-11,990.82

Finding the Fourth Proportional to 21,422.26, 29,562.70 and 11,990.82

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Solution

The fourth proportional to 21,422.26, 29,562.70 and 11,990.82 is: 16,547.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.26 : 29,562.70 = 11,990.82 : x
  2. Step 2: Convert to fraction form
    21,422.26/29,562.70 = 11,990.82/x
  3. Step 3: Cross multiply
    21,422.26x = 29,562.70 × 11,990.82
  4. Step 4: Simplify right side
    21,422.26x = 354,481,014.41
  5. Step 5: Solve for x
    x = 354,481,014.41/21,422.26
  6. Step 6: Final answer
    x = 16,547.32

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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.