Home / 21,744.46-30,006.87-12,312.82

Finding the Fourth Proportional to 21,744.46, 30,006.87 and 12,312.82

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Solution

The fourth proportional to 21,744.46, 30,006.87 and 12,312.82 is: 16,991.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,744.46 : 30,006.87 = 12,312.82 : x
  2. Step 2: Convert to fraction form
    21,744.46/30,006.87 = 12,312.82/x
  3. Step 3: Cross multiply
    21,744.46x = 30,006.87 × 12,312.82
  4. Step 4: Simplify right side
    21,744.46x = 369,469,189.07
  5. Step 5: Solve for x
    x = 369,469,189.07/21,744.46
  6. Step 6: Final answer
    x = 16,991.42

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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.