Home / 21,317.29-29,419.62-11,759.05

Finding the Fourth Proportional to 21,317.29, 29,419.62 and 11,759.05

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Solution

The fourth proportional to 21,317.29, 29,419.62 and 11,759.05 is: 16,228.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.29 : 29,419.62 = 11,759.05 : x
  2. Step 2: Convert to fraction form
    21,317.29/29,419.62 = 11,759.05/x
  3. Step 3: Cross multiply
    21,317.29x = 29,419.62 × 11,759.05
  4. Step 4: Simplify right side
    21,317.29x = 345,946,782.56
  5. Step 5: Solve for x
    x = 345,946,782.56/21,317.29
  6. Step 6: Final answer
    x = 16,228.46

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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.