Home / 21,486.75-29,651.99-11,926.86

Finding the Fourth Proportional to 21,486.75, 29,651.99 and 11,926.86

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Solution

The fourth proportional to 21,486.75, 29,651.99 and 11,926.86 is: 16,459.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.75 : 29,651.99 = 11,926.86 : x
  2. Step 2: Convert to fraction form
    21,486.75/29,651.99 = 11,926.86/x
  3. Step 3: Cross multiply
    21,486.75x = 29,651.99 × 11,926.86
  4. Step 4: Simplify right side
    21,486.75x = 353,655,073.82
  5. Step 5: Solve for x
    x = 353,655,073.82/21,486.75
  6. Step 6: Final answer
    x = 16,459.22

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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.