Home / 14,139.38-21,202.32-5,251.88

Finding the Fourth Proportional to 14,139.38, 21,202.32 and 5,251.88

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Solution

The fourth proportional to 14,139.38, 21,202.32 and 5,251.88 is: 7,875.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.38 : 21,202.32 = 5,251.88 : x
  2. Step 2: Convert to fraction form
    14,139.38/21,202.32 = 5,251.88/x
  3. Step 3: Cross multiply
    14,139.38x = 21,202.32 × 5,251.88
  4. Step 4: Simplify right side
    14,139.38x = 111,352,040.36
  5. Step 5: Solve for x
    x = 111,352,040.36/14,139.38
  6. Step 6: Final answer
    x = 7,875.31

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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.