Home / 13,988.63-20,976.30-5,097.67

Finding the Fourth Proportional to 13,988.63, 20,976.30 and 5,097.67

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Solution

The fourth proportional to 13,988.63, 20,976.30 and 5,097.67 is: 7,644.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.63 : 20,976.30 = 5,097.67 : x
  2. Step 2: Convert to fraction form
    13,988.63/20,976.30 = 5,097.67/x
  3. Step 3: Cross multiply
    13,988.63x = 20,976.30 × 5,097.67
  4. Step 4: Simplify right side
    13,988.63x = 106,930,202.78
  5. Step 5: Solve for x
    x = 106,930,202.78/13,988.63
  6. Step 6: Final answer
    x = 7,644.08

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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.