Home / 21,200.76-29,257.56-11,769.84

Finding the Fourth Proportional to 21,200.76, 29,257.56 and 11,769.84

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Solution

The fourth proportional to 21,200.76, 29,257.56 and 11,769.84 is: 16,242.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.76 : 29,257.56 = 11,769.84 : x
  2. Step 2: Convert to fraction form
    21,200.76/29,257.56 = 11,769.84/x
  3. Step 3: Cross multiply
    21,200.76x = 29,257.56 × 11,769.84
  4. Step 4: Simplify right side
    21,200.76x = 344,356,799.99
  5. Step 5: Solve for x
    x = 344,356,799.99/21,200.76
  6. Step 6: Final answer
    x = 16,242.66

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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.