Home / 21,353.41-29,481.42-13,811.30

Finding the Fourth Proportional to 21,353.41, 29,481.42 and 13,811.30

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Solution

The fourth proportional to 21,353.41, 29,481.42 and 13,811.30 is: 19,068.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.41 : 29,481.42 = 13,811.30 : x
  2. Step 2: Convert to fraction form
    21,353.41/29,481.42 = 13,811.30/x
  3. Step 3: Cross multiply
    21,353.41x = 29,481.42 × 13,811.30
  4. Step 4: Simplify right side
    21,353.41x = 407,176,736.05
  5. Step 5: Solve for x
    x = 407,176,736.05/21,353.41
  6. Step 6: Final answer
    x = 19,068.46

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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.