Home / 21,179.77-29,224.99-12,225.85

Finding the Fourth Proportional to 21,179.77, 29,224.99 and 12,225.85

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Solution

The fourth proportional to 21,179.77, 29,224.99 and 12,225.85 is: 16,869.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.77 : 29,224.99 = 12,225.85 : x
  2. Step 2: Convert to fraction form
    21,179.77/29,224.99 = 12,225.85/x
  3. Step 3: Cross multiply
    21,179.77x = 29,224.99 × 12,225.85
  4. Step 4: Simplify right side
    21,179.77x = 357,300,282.86
  5. Step 5: Solve for x
    x = 357,300,282.86/21,179.77
  6. Step 6: Final answer
    x = 16,869.88

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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.