Home / 21,899.89-30,222.08-12,469.06

Finding the Fourth Proportional to 21,899.89, 30,222.08 and 12,469.06

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Solution

The fourth proportional to 21,899.89, 30,222.08 and 12,469.06 is: 17,207.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,899.89 : 30,222.08 = 12,469.06 : x
  2. Step 2: Convert to fraction form
    21,899.89/30,222.08 = 12,469.06/x
  3. Step 3: Cross multiply
    21,899.89x = 30,222.08 × 12,469.06
  4. Step 4: Simplify right side
    21,899.89x = 376,840,951.04
  5. Step 5: Solve for x
    x = 376,840,951.04/21,899.89
  6. Step 6: Final answer
    x = 17,207.43

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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.