Home / 13,805.12-20,707.52-5,039.96

Finding the Fourth Proportional to 13,805.12, 20,707.52 and 5,039.96

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Solution

The fourth proportional to 13,805.12, 20,707.52 and 5,039.96 is: 7,559.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,805.12 : 20,707.52 = 5,039.96 : x
  2. Step 2: Convert to fraction form
    13,805.12/20,707.52 = 5,039.96/x
  3. Step 3: Cross multiply
    13,805.12x = 20,707.52 × 5,039.96
  4. Step 4: Simplify right side
    13,805.12x = 104,364,943.76
  5. Step 5: Solve for x
    x = 104,364,943.76/13,805.12
  6. Step 6: Final answer
    x = 7,559.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.