Home / 13,040.90-18,043.89-11,365.79

Finding the Fourth Proportional to 13,040.90, 18,043.89 and 11,365.79

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Solution

The fourth proportional to 13,040.90, 18,043.89 and 11,365.79 is: 15,726.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,040.90 : 18,043.89 = 11,365.79 : x
  2. Step 2: Convert to fraction form
    13,040.90/18,043.89 = 11,365.79/x
  3. Step 3: Cross multiply
    13,040.90x = 18,043.89 × 11,365.79
  4. Step 4: Simplify right side
    13,040.90x = 205,083,115.89
  5. Step 5: Solve for x
    x = 205,083,115.89/13,040.90
  6. Step 6: Final answer
    x = 15,726.15

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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.