Home / 13,925.97-20,890.76-5,159.97

Finding the Fourth Proportional to 13,925.97, 20,890.76 and 5,159.97

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Solution

The fourth proportional to 13,925.97, 20,890.76 and 5,159.97 is: 7,740.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.97 : 20,890.76 = 5,159.97 : x
  2. Step 2: Convert to fraction form
    13,925.97/20,890.76 = 5,159.97/x
  3. Step 3: Cross multiply
    13,925.97x = 20,890.76 × 5,159.97
  4. Step 4: Simplify right side
    13,925.97x = 107,795,669.08
  5. Step 5: Solve for x
    x = 107,795,669.08/13,925.97
  6. Step 6: Final answer
    x = 7,740.62

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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.