Home / 19,789.25-27,309.17-11,406.29

Finding the Fourth Proportional to 19,789.25, 27,309.17 and 11,406.29

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Solution

The fourth proportional to 19,789.25, 27,309.17 and 11,406.29 is: 15,740.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,789.25 : 27,309.17 = 11,406.29 : x
  2. Step 2: Convert to fraction form
    19,789.25/27,309.17 = 11,406.29/x
  3. Step 3: Cross multiply
    19,789.25x = 27,309.17 × 11,406.29
  4. Step 4: Simplify right side
    19,789.25x = 311,496,312.68
  5. Step 5: Solve for x
    x = 311,496,312.68/19,789.25
  6. Step 6: Final answer
    x = 15,740.68

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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.