Home / 15,215.37-20,996.55-9,553.05

Finding the Fourth Proportional to 15,215.37, 20,996.55 and 9,553.05

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Solution

The fourth proportional to 15,215.37, 20,996.55 and 9,553.05 is: 13,182.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.37 : 20,996.55 = 9,553.05 : x
  2. Step 2: Convert to fraction form
    15,215.37/20,996.55 = 9,553.05/x
  3. Step 3: Cross multiply
    15,215.37x = 20,996.55 × 9,553.05
  4. Step 4: Simplify right side
    15,215.37x = 200,581,091.98
  5. Step 5: Solve for x
    x = 200,581,091.98/15,215.37
  6. Step 6: Final answer
    x = 13,182.79

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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.