Home / 21,613.92-29,826.99-12,185.52

Finding the Fourth Proportional to 21,613.92, 29,826.99 and 12,185.52

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Solution

The fourth proportional to 21,613.92, 29,826.99 and 12,185.52 is: 16,815.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,613.92 : 29,826.99 = 12,185.52 : x
  2. Step 2: Convert to fraction form
    21,613.92/29,826.99 = 12,185.52/x
  3. Step 3: Cross multiply
    21,613.92x = 29,826.99 × 12,185.52
  4. Step 4: Simplify right side
    21,613.92x = 363,457,383.18
  5. Step 5: Solve for x
    x = 363,457,383.18/21,613.92
  6. Step 6: Final answer
    x = 16,815.89

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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.