Home / 21,403.42-29,536.23-11,972.86

Finding the Fourth Proportional to 21,403.42, 29,536.23 and 11,972.86

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Solution

The fourth proportional to 21,403.42, 29,536.23 and 11,972.86 is: 16,522.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,403.42 : 29,536.23 = 11,972.86 : x
  2. Step 2: Convert to fraction form
    21,403.42/29,536.23 = 11,972.86/x
  3. Step 3: Cross multiply
    21,403.42x = 29,536.23 × 11,972.86
  4. Step 4: Simplify right side
    21,403.42x = 353,633,146.72
  5. Step 5: Solve for x
    x = 353,633,146.72/21,403.42
  6. Step 6: Final answer
    x = 16,522.27

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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.