Home / 20,310.84-28,020.06-11,923.56

Finding the Fourth Proportional to 20,310.84, 28,020.06 and 11,923.56

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Solution

The fourth proportional to 20,310.84, 28,020.06 and 11,923.56 is: 16,449.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310.84 : 28,020.06 = 11,923.56 : x
  2. Step 2: Convert to fraction form
    20,310.84/28,020.06 = 11,923.56/x
  3. Step 3: Cross multiply
    20,310.84x = 28,020.06 × 11,923.56
  4. Step 4: Simplify right side
    20,310.84x = 334,098,866.61
  5. Step 5: Solve for x
    x = 334,098,866.61/20,310.84
  6. Step 6: Final answer
    x = 16,449.29

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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.