Home / 21,172.44-29,215.86-12,222.83

Finding the Fourth Proportional to 21,172.44, 29,215.86 and 12,222.83

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Solution

The fourth proportional to 21,172.44, 29,215.86 and 12,222.83 is: 16,866.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.44 : 29,215.86 = 12,222.83 : x
  2. Step 2: Convert to fraction form
    21,172.44/29,215.86 = 12,222.83/x
  3. Step 3: Cross multiply
    21,172.44x = 29,215.86 × 12,222.83
  4. Step 4: Simplify right side
    21,172.44x = 357,100,490.08
  5. Step 5: Solve for x
    x = 357,100,490.08/21,172.44
  6. Step 6: Final answer
    x = 16,866.29

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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.