Home / 21,338.42-29,452.29-12,961.94

Finding the Fourth Proportional to 21,338.42, 29,452.29 and 12,961.94

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Solution

The fourth proportional to 21,338.42, 29,452.29 and 12,961.94 is: 17,890.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.42 : 29,452.29 = 12,961.94 : x
  2. Step 2: Convert to fraction form
    21,338.42/29,452.29 = 12,961.94/x
  3. Step 3: Cross multiply
    21,338.42x = 29,452.29 × 12,961.94
  4. Step 4: Simplify right side
    21,338.42x = 381,758,815.84
  5. Step 5: Solve for x
    x = 381,758,815.84/21,338.42
  6. Step 6: Final answer
    x = 17,890.68

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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.