Home / 15,208.84-20,976.62-13,087.91

Finding the Fourth Proportional to 15,208.84, 20,976.62 and 13,087.91

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Solution

The fourth proportional to 15,208.84, 20,976.62 and 13,087.91 is: 18,051.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,208.84 : 20,976.62 = 13,087.91 : x
  2. Step 2: Convert to fraction form
    15,208.84/20,976.62 = 13,087.91/x
  3. Step 3: Cross multiply
    15,208.84x = 20,976.62 × 13,087.91
  4. Step 4: Simplify right side
    15,208.84x = 274,540,114.66
  5. Step 5: Solve for x
    x = 274,540,114.66/15,208.84
  6. Step 6: Final answer
    x = 18,051.35

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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.