Home / 21,769.85-30,033.72-14,213.76

Finding the Fourth Proportional to 21,769.85, 30,033.72 and 14,213.76

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Solution

The fourth proportional to 21,769.85, 30,033.72 and 14,213.76 is: 19,609.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,769.85 : 30,033.72 = 14,213.76 : x
  2. Step 2: Convert to fraction form
    21,769.85/30,033.72 = 14,213.76/x
  3. Step 3: Cross multiply
    21,769.85x = 30,033.72 × 14,213.76
  4. Step 4: Simplify right side
    21,769.85x = 426,892,087.99
  5. Step 5: Solve for x
    x = 426,892,087.99/21,769.85
  6. Step 6: Final answer
    x = 19,609.33

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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.