Home / 20,087.93-27,718.79-11,135.35

Finding the Fourth Proportional to 20,087.93, 27,718.79 and 11,135.35

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Solution

The fourth proportional to 20,087.93, 27,718.79 and 11,135.35 is: 15,365.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.93 : 27,718.79 = 11,135.35 : x
  2. Step 2: Convert to fraction form
    20,087.93/27,718.79 = 11,135.35/x
  3. Step 3: Cross multiply
    20,087.93x = 27,718.79 × 11,135.35
  4. Step 4: Simplify right side
    20,087.93x = 308,658,407.20
  5. Step 5: Solve for x
    x = 308,658,407.20/20,087.93
  6. Step 6: Final answer
    x = 15,365.36

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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.