Home / 22,021.34-30,382.09-12,459.89

Finding the Fourth Proportional to 22,021.34, 30,382.09 and 12,459.89

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Solution

The fourth proportional to 22,021.34, 30,382.09 and 12,459.89 is: 17,190.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,021.34 : 30,382.09 = 12,459.89 : x
  2. Step 2: Convert to fraction form
    22,021.34/30,382.09 = 12,459.89/x
  3. Step 3: Cross multiply
    22,021.34x = 30,382.09 × 12,459.89
  4. Step 4: Simplify right side
    22,021.34x = 378,557,544.18
  5. Step 5: Solve for x
    x = 378,557,544.18/22,021.34
  6. Step 6: Final answer
    x = 17,190.49

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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.