Home / 21,817.26-30,107.43-12,385.62

Finding the Fourth Proportional to 21,817.26, 30,107.43 and 12,385.62

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Solution

The fourth proportional to 21,817.26, 30,107.43 and 12,385.62 is: 17,091.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,817.26 : 30,107.43 = 12,385.62 : x
  2. Step 2: Convert to fraction form
    21,817.26/30,107.43 = 12,385.62/x
  3. Step 3: Cross multiply
    21,817.26x = 30,107.43 × 12,385.62
  4. Step 4: Simplify right side
    21,817.26x = 372,899,187.16
  5. Step 5: Solve for x
    x = 372,899,187.16/21,817.26
  6. Step 6: Final answer
    x = 17,091.93

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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.