Home / 13,713.06-18,933.18-12,771.28

Finding the Fourth Proportional to 13,713.06, 18,933.18 and 12,771.28

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Solution

The fourth proportional to 13,713.06, 18,933.18 and 12,771.28 is: 17,632.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,713.06 : 18,933.18 = 12,771.28 : x
  2. Step 2: Convert to fraction form
    13,713.06/18,933.18 = 12,771.28/x
  3. Step 3: Cross multiply
    13,713.06x = 18,933.18 × 12,771.28
  4. Step 4: Simplify right side
    13,713.06x = 241,800,848.40
  5. Step 5: Solve for x
    x = 241,800,848.40/13,713.06
  6. Step 6: Final answer
    x = 17,632.89

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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.