Home / 19,860.21-27,399.47-11,360.61

Finding the Fourth Proportional to 19,860.21, 27,399.47 and 11,360.61

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Solution

The fourth proportional to 19,860.21, 27,399.47 and 11,360.61 is: 15,673.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.21 : 27,399.47 = 11,360.61 : x
  2. Step 2: Convert to fraction form
    19,860.21/27,399.47 = 11,360.61/x
  3. Step 3: Cross multiply
    19,860.21x = 27,399.47 × 11,360.61
  4. Step 4: Simplify right side
    19,860.21x = 311,274,636.07
  5. Step 5: Solve for x
    x = 311,274,636.07/19,860.21
  6. Step 6: Final answer
    x = 15,673.28

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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.