Home / 21,404.24-29,539.80-11,975.84

Finding the Fourth Proportional to 21,404.24, 29,539.80 and 11,975.84

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Solution

The fourth proportional to 21,404.24, 29,539.80 and 11,975.84 is: 16,527.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,404.24 : 29,539.80 = 11,975.84 : x
  2. Step 2: Convert to fraction form
    21,404.24/29,539.80 = 11,975.84/x
  3. Step 3: Cross multiply
    21,404.24x = 29,539.80 × 11,975.84
  4. Step 4: Simplify right side
    21,404.24x = 353,763,918.43
  5. Step 5: Solve for x
    x = 353,763,918.43/21,404.24
  6. Step 6: Final answer
    x = 16,527.75

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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.