Home / 21,268.95-29,351.27-11,709.80

Finding the Fourth Proportional to 21,268.95, 29,351.27 and 11,709.80

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Solution

The fourth proportional to 21,268.95, 29,351.27 and 11,709.80 is: 16,159.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.95 : 29,351.27 = 11,709.80 : x
  2. Step 2: Convert to fraction form
    21,268.95/29,351.27 = 11,709.80/x
  3. Step 3: Cross multiply
    21,268.95x = 29,351.27 × 11,709.80
  4. Step 4: Simplify right side
    21,268.95x = 343,697,604.10
  5. Step 5: Solve for x
    x = 343,697,604.10/21,268.95
  6. Step 6: Final answer
    x = 16,159.59

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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.