Home / 21,020.51-29,008.50-11,589.41

Finding the Fourth Proportional to 21,020.51, 29,008.50 and 11,589.41

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Solution

The fourth proportional to 21,020.51, 29,008.50 and 11,589.41 is: 15,993.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.51 : 29,008.50 = 11,589.41 : x
  2. Step 2: Convert to fraction form
    21,020.51/29,008.50 = 11,589.41/x
  3. Step 3: Cross multiply
    21,020.51x = 29,008.50 × 11,589.41
  4. Step 4: Simplify right side
    21,020.51x = 336,191,399.99
  5. Step 5: Solve for x
    x = 336,191,399.99/21,020.51
  6. Step 6: Final answer
    x = 15,993.49

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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.