Home / 20,260.74-27,961.23-11,309.99

Finding the Fourth Proportional to 20,260.74, 27,961.23 and 11,309.99

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Solution

The fourth proportional to 20,260.74, 27,961.23 and 11,309.99 is: 15,608.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.74 : 27,961.23 = 11,309.99 : x
  2. Step 2: Convert to fraction form
    20,260.74/27,961.23 = 11,309.99/x
  3. Step 3: Cross multiply
    20,260.74x = 27,961.23 × 11,309.99
  4. Step 4: Simplify right side
    20,260.74x = 316,241,231.69
  5. Step 5: Solve for x
    x = 316,241,231.69/20,260.74
  6. Step 6: Final answer
    x = 15,608.57

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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.