Home / 20,376.06-28,119.06-11,423.94

Finding the Fourth Proportional to 20,376.06, 28,119.06 and 11,423.94

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Solution

The fourth proportional to 20,376.06, 28,119.06 and 11,423.94 is: 15,765.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376.06 : 28,119.06 = 11,423.94 : x
  2. Step 2: Convert to fraction form
    20,376.06/28,119.06 = 11,423.94/x
  3. Step 3: Cross multiply
    20,376.06x = 28,119.06 × 11,423.94
  4. Step 4: Simplify right side
    20,376.06x = 321,230,454.30
  5. Step 5: Solve for x
    x = 321,230,454.30/20,376.06
  6. Step 6: Final answer
    x = 15,765.09

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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.