Home / 21,205.08-29,260.91-12,251.88

Finding the Fourth Proportional to 21,205.08, 29,260.91 and 12,251.88

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Solution

The fourth proportional to 21,205.08, 29,260.91 and 12,251.88 is: 16,906.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,205.08 : 29,260.91 = 12,251.88 : x
  2. Step 2: Convert to fraction form
    21,205.08/29,260.91 = 12,251.88/x
  3. Step 3: Cross multiply
    21,205.08x = 29,260.91 × 12,251.88
  4. Step 4: Simplify right side
    21,205.08x = 358,501,188.64
  5. Step 5: Solve for x
    x = 358,501,188.64/21,205.08
  6. Step 6: Final answer
    x = 16,906.38

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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.