Home / 14,129.03-21,178.73-4,765.82

Finding the Fourth Proportional to 14,129.03, 21,178.73 and 4,765.82

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Solution

The fourth proportional to 14,129.03, 21,178.73 and 4,765.82 is: 7,143.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,129.03 : 21,178.73 = 4,765.82 : x
  2. Step 2: Convert to fraction form
    14,129.03/21,178.73 = 4,765.82/x
  3. Step 3: Cross multiply
    14,129.03x = 21,178.73 × 4,765.82
  4. Step 4: Simplify right side
    14,129.03x = 100,933,921.03
  5. Step 5: Solve for x
    x = 100,933,921.03/14,129.03
  6. Step 6: Final answer
    x = 7,143.72

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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.