Home / 21,486.87-29,651.90-11,926.76

Finding the Fourth Proportional to 21,486.87, 29,651.90 and 11,926.76

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Solution

The fourth proportional to 21,486.87, 29,651.90 and 11,926.76 is: 16,458.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.87 : 29,651.90 = 11,926.76 : x
  2. Step 2: Convert to fraction form
    21,486.87/29,651.90 = 11,926.76/x
  3. Step 3: Cross multiply
    21,486.87x = 29,651.90 × 11,926.76
  4. Step 4: Simplify right side
    21,486.87x = 353,651,109.34
  5. Step 5: Solve for x
    x = 353,651,109.34/21,486.87
  6. Step 6: Final answer
    x = 16,458.94

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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.