Home / 21,619.32-29,834.24-12,187.88

Finding the Fourth Proportional to 21,619.32, 29,834.24 and 12,187.88

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Solution

The fourth proportional to 21,619.32, 29,834.24 and 12,187.88 is: 16,819.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.32 : 29,834.24 = 12,187.88 : x
  2. Step 2: Convert to fraction form
    21,619.32/29,834.24 = 12,187.88/x
  3. Step 3: Cross multiply
    21,619.32x = 29,834.24 × 12,187.88
  4. Step 4: Simplify right side
    21,619.32x = 363,616,137.01
  5. Step 5: Solve for x
    x = 363,616,137.01/21,619.32
  6. Step 6: Final answer
    x = 16,819.04

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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.