Home / 21,021.21-29,008.13-11,589.03

Finding the Fourth Proportional to 21,021.21, 29,008.13 and 11,589.03

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Solution

The fourth proportional to 21,021.21, 29,008.13 and 11,589.03 is: 15,992.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.21 : 29,008.13 = 11,589.03 : x
  2. Step 2: Convert to fraction form
    21,021.21/29,008.13 = 11,589.03/x
  3. Step 3: Cross multiply
    21,021.21x = 29,008.13 × 11,589.03
  4. Step 4: Simplify right side
    21,021.21x = 336,176,030.87
  5. Step 5: Solve for x
    x = 336,176,030.87/21,021.21
  6. Step 6: Final answer
    x = 15,992.23

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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.