Home / 15,171.84-20,945.40-10,481.36

Finding the Fourth Proportional to 15,171.84, 20,945.40 and 10,481.36

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Solution

The fourth proportional to 15,171.84, 20,945.40 and 10,481.36 is: 14,469.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,171.84 : 20,945.40 = 10,481.36 : x
  2. Step 2: Convert to fraction form
    15,171.84/20,945.40 = 10,481.36/x
  3. Step 3: Cross multiply
    15,171.84x = 20,945.40 × 10,481.36
  4. Step 4: Simplify right side
    15,171.84x = 219,536,277.74
  5. Step 5: Solve for x
    x = 219,536,277.74/15,171.84
  6. Step 6: Final answer
    x = 14,469.98

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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.