Home / 21,179.24-29,231.16-12,225.50

Finding the Fourth Proportional to 21,179.24, 29,231.16 and 12,225.50

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Solution

The fourth proportional to 21,179.24, 29,231.16 and 12,225.50 is: 16,873.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.24 : 29,231.16 = 12,225.50 : x
  2. Step 2: Convert to fraction form
    21,179.24/29,231.16 = 12,225.50/x
  3. Step 3: Cross multiply
    21,179.24x = 29,231.16 × 12,225.50
  4. Step 4: Simplify right side
    21,179.24x = 357,365,546.58
  5. Step 5: Solve for x
    x = 357,365,546.58/21,179.24
  6. Step 6: Final answer
    x = 16,873.39

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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.