Home / 20,260.43-27,960.80-11,309.68

Finding the Fourth Proportional to 20,260.43, 27,960.80 and 11,309.68

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Solution

The fourth proportional to 20,260.43, 27,960.80 and 11,309.68 is: 15,608.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.43 : 27,960.80 = 11,309.68 : x
  2. Step 2: Convert to fraction form
    20,260.43/27,960.80 = 11,309.68/x
  3. Step 3: Cross multiply
    20,260.43x = 27,960.80 × 11,309.68
  4. Step 4: Simplify right side
    20,260.43x = 316,227,700.54
  5. Step 5: Solve for x
    x = 316,227,700.54/20,260.43
  6. Step 6: Final answer
    x = 15,608.14

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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.